diff --git a/src/aliased_buffer.h b/src/aliased_buffer.h
index 2e5598b475..21aaeb6114 100644
--- a/src/aliased_buffer.h
+++ b/src/aliased_buffer.h
@@ -3,7 +3,6 @@
 #define SRC_ALIASED_BUFFER_H_
 
 #include "v8.h"
-#include "util.h"
 #include "util-inl.h"
 
 namespace node {
diff --git a/src/async-wrap-inl.h b/src/async-wrap-inl.h
index 2d10a6d5f7..44302343cf 100644
--- a/src/async-wrap-inl.h
+++ b/src/async-wrap-inl.h
@@ -25,7 +25,6 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "async-wrap.h"
-#include "base-object.h"
 #include "base-object-inl.h"
 #include "node_internals.h"
 
diff --git a/src/async-wrap.cc b/src/async-wrap.cc
index 66c8e1ad07..e2280be225 100644
--- a/src/async-wrap.cc
+++ b/src/async-wrap.cc
@@ -19,11 +19,8 @@
 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-#include "async-wrap.h"
 #include "async-wrap-inl.h"
-#include "env.h"
 #include "env-inl.h"
-#include "util.h"
 #include "util-inl.h"
 
 #include "uv.h"
diff --git a/src/base-object-inl.h b/src/base-object-inl.h
index 3b3c6b4f1d..252cc2c5a8 100644
--- a/src/base-object-inl.h
+++ b/src/base-object-inl.h
@@ -25,9 +25,7 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "base-object.h"
-#include "env.h"
 #include "env-inl.h"
-#include "util.h"
 #include "util-inl.h"
 #include "v8.h"
 
diff --git a/src/cares_wrap.cc b/src/cares_wrap.cc
index a4ed032fbd..619d59fd56 100644
--- a/src/cares_wrap.cc
+++ b/src/cares_wrap.cc
@@ -21,14 +21,10 @@
 
 #define CARES_STATICLIB
 #include "ares.h"
-#include "async-wrap.h"
 #include "async-wrap-inl.h"
-#include "env.h"
 #include "env-inl.h"
 #include "node.h"
-#include "req-wrap.h"
 #include "req-wrap-inl.h"
-#include "util.h"
 #include "util-inl.h"
 #include "uv.h"
 
diff --git a/src/connect_wrap.cc b/src/connect_wrap.cc
index e373b5a36e..3dd3b40194 100644
--- a/src/connect_wrap.cc
+++ b/src/connect_wrap.cc
@@ -1,10 +1,7 @@
 #include "connect_wrap.h"
 
-#include "env.h"
 #include "env-inl.h"
-#include "req-wrap.h"
 #include "req-wrap-inl.h"
-#include "util.h"
 #include "util-inl.h"
 
 namespace node {
diff --git a/src/connection_wrap.cc b/src/connection_wrap.cc
index a7f08ecc19..b620c387ff 100644
--- a/src/connection_wrap.cc
+++ b/src/connection_wrap.cc
@@ -2,11 +2,9 @@
 
 #include "connect_wrap.h"
 #include "env-inl.h"
-#include "env.h"
 #include "pipe_wrap.h"
 #include "stream_wrap.h"
 #include "tcp_wrap.h"
-#include "util.h"
 #include "util-inl.h"
 
 namespace node {
diff --git a/src/env-inl.h b/src/env-inl.h
index 9ead71ab49..de18b6353c 100644
--- a/src/env-inl.h
+++ b/src/env-inl.h
@@ -27,7 +27,6 @@
 #include "aliased_buffer.h"
 #include "env.h"
 #include "node.h"
-#include "util.h"
 #include "util-inl.h"
 #include "uv.h"
 #include "v8.h"
diff --git a/src/fs_event_wrap.cc b/src/fs_event_wrap.cc
index 0ebd962549..442cd8b730 100644
--- a/src/fs_event_wrap.cc
+++ b/src/fs_event_wrap.cc
@@ -19,11 +19,8 @@
 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-#include "async-wrap.h"
 #include "async-wrap-inl.h"
-#include "env.h"
 #include "env-inl.h"
-#include "util.h"
 #include "util-inl.h"
 #include "node.h"
 #include "handle_wrap.h"
diff --git a/src/handle_wrap.cc b/src/handle_wrap.cc
index e23bbe41e3..25e5c55a2c 100644
--- a/src/handle_wrap.cc
+++ b/src/handle_wrap.cc
@@ -20,11 +20,8 @@
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include "handle_wrap.h"
-#include "async-wrap.h"
 #include "async-wrap-inl.h"
-#include "env.h"
 #include "env-inl.h"
-#include "util.h"
 #include "util-inl.h"
 #include "node.h"
 
diff --git a/src/inspector_io.cc b/src/inspector_io.cc
index 12a0d20720..73f0419ead 100644
--- a/src/inspector_io.cc
+++ b/src/inspector_io.cc
@@ -1,7 +1,6 @@
 #include "inspector_io.h"
 
 #include "inspector_socket_server.h"
-#include "env.h"
 #include "env-inl.h"
 #include "node.h"
 #include "node_crypto.h"
diff --git a/src/inspector_js_api.cc b/src/inspector_js_api.cc
index 8bd682351a..f72517bac1 100644
--- a/src/inspector_js_api.cc
+++ b/src/inspector_js_api.cc
@@ -1,4 +1,3 @@
-#include "base-object.h"
 #include "base-object-inl.h"
 #include "inspector_agent.h"
 #include "inspector_io.h"
diff --git a/src/inspector_socket.cc b/src/inspector_socket.cc
index 092138a7fa..265b376161 100644
--- a/src/inspector_socket.cc
+++ b/src/inspector_socket.cc
@@ -1,5 +1,4 @@
 #include "inspector_socket.h"
-#include "util.h"
 #include "util-inl.h"
 
 #define NODE_WANT_INTERNALS 1
diff --git a/src/inspector_socket.h b/src/inspector_socket.h
index ee4bd7835c..f93150d6f9 100644
--- a/src/inspector_socket.h
+++ b/src/inspector_socket.h
@@ -2,7 +2,6 @@
 #define SRC_INSPECTOR_SOCKET_H_
 
 #include "http_parser.h"
-#include "util.h"
 #include "util-inl.h"
 #include "uv.h"
 
diff --git a/src/js_stream.cc b/src/js_stream.cc
index a279970c1b..9d28b90585 100644
--- a/src/js_stream.cc
+++ b/src/js_stream.cc
@@ -1,10 +1,8 @@
 #include "js_stream.h"
 
 #include "async-wrap.h"
-#include "env.h"
 #include "env-inl.h"
 #include "node_buffer.h"
-#include "stream_base.h"
 #include "stream_base-inl.h"
 #include "v8.h"
 
diff --git a/src/module_wrap.cc b/src/module_wrap.cc
index 92dc9cf917..c28fe6580e 100644
--- a/src/module_wrap.cc
+++ b/src/module_wrap.cc
@@ -5,7 +5,6 @@
 
 #include "env.h"
 #include "node_url.h"
-#include "util.h"
 #include "util-inl.h"
 #include "node_internals.h"
 
diff --git a/src/module_wrap.h b/src/module_wrap.h
index ac2f90476d..e0f7ce5bd2 100644
--- a/src/module_wrap.h
+++ b/src/module_wrap.h
@@ -7,7 +7,6 @@
 #include <string>
 #include <vector>
 #include "node_url.h"
-#include "base-object.h"
 #include "base-object-inl.h"
 
 namespace node {
diff --git a/src/node.cc b/src/node.cc
index 3d1bf70e36..d667a6574e 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -54,14 +54,11 @@
 #endif
 
 #include "ares.h"
-#include "async-wrap.h"
 #include "async-wrap-inl.h"
-#include "env.h"
 #include "env-inl.h"
 #include "handle_wrap.h"
 #include "http_parser.h"
 #include "nghttp2/nghttp2ver.h"
-#include "req-wrap.h"
 #include "req-wrap-inl.h"
 #include "string_bytes.h"
 #include "tracing/agent.h"
diff --git a/src/node_buffer.cc b/src/node_buffer.cc
index dc67844553..4c60073c30 100644
--- a/src/node_buffer.cc
+++ b/src/node_buffer.cc
@@ -22,11 +22,9 @@
 #include "node.h"
 #include "node_buffer.h"
 
-#include "env.h"
 #include "env-inl.h"
 #include "string_bytes.h"
 #include "string_search.h"
-#include "util.h"
 #include "util-inl.h"
 #include "v8-profiler.h"
 #include "v8.h"
diff --git a/src/node_config.cc b/src/node_config.cc
index 8af3472b0f..b39dc20f87 100644
--- a/src/node_config.cc
+++ b/src/node_config.cc
@@ -1,8 +1,6 @@
 #include "node.h"
 #include "node_i18n.h"
-#include "env.h"
 #include "env-inl.h"
-#include "util.h"
 #include "util-inl.h"
 #include "node_debug_options.h"
 
diff --git a/src/node_contextify.cc b/src/node_contextify.cc
index efbb5fb7fe..3168aef8c3 100644
--- a/src/node_contextify.cc
+++ b/src/node_contextify.cc
@@ -21,7 +21,6 @@
 
 #include "node_internals.h"
 #include "node_watchdog.h"
-#include "base-object.h"
 #include "base-object-inl.h"
 #include "v8-debug.h"
 
diff --git a/src/node_counters.cc b/src/node_counters.cc
index c6e9ea5037..06d2b9f68f 100644
--- a/src/node_counters.cc
+++ b/src/node_counters.cc
@@ -21,7 +21,6 @@
 
 #include "node_counters.h"
 #include "uv.h"
-#include "env.h"
 #include "env-inl.h"
 
 #include <string.h>
diff --git a/src/node_crypto.cc b/src/node_crypto.cc
index 93350ed12a..5b4ce7c059 100644
--- a/src/node_crypto.cc
+++ b/src/node_crypto.cc
@@ -28,12 +28,9 @@
 #include "node_mutex.h"
 #include "tls_wrap.h"  // TLSWrap
 
-#include "async-wrap.h"
 #include "async-wrap-inl.h"
-#include "env.h"
 #include "env-inl.h"
 #include "string_bytes.h"
-#include "util.h"
 #include "util-inl.h"
 #include "v8.h"
 // CNNIC Hash WhiteList is taken from
diff --git a/src/node_crypto.h b/src/node_crypto.h
index 3abfe973a7..a155411aa8 100644
--- a/src/node_crypto.h
+++ b/src/node_crypto.h
@@ -25,15 +25,13 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "node.h"
-#include "node_crypto_clienthello.h"  // ClientHelloParser
+// ClientHelloParser
 #include "node_crypto_clienthello-inl.h"
 
 #include "node_buffer.h"
 
 #include "env.h"
-#include "async-wrap.h"
 #include "async-wrap-inl.h"
-#include "base-object.h"
 #include "base-object-inl.h"
 
 #include "v8.h"
diff --git a/src/node_crypto_bio.cc b/src/node_crypto_bio.cc
index 00fd0b420c..eb1399f0bf 100644
--- a/src/node_crypto_bio.cc
+++ b/src/node_crypto_bio.cc
@@ -21,7 +21,6 @@
 
 #include "node_crypto_bio.h"
 #include "openssl/bio.h"
-#include "util.h"
 #include "util-inl.h"
 #include <limits.h>
 #include <string.h>
diff --git a/src/node_crypto_bio.h b/src/node_crypto_bio.h
index 5deac92232..6ec256d008 100644
--- a/src/node_crypto_bio.h
+++ b/src/node_crypto_bio.h
@@ -25,9 +25,7 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "openssl/bio.h"
-#include "env.h"
 #include "env-inl.h"
-#include "util.h"
 #include "util-inl.h"
 #include "v8.h"
 
diff --git a/src/node_crypto_clienthello-inl.h b/src/node_crypto_clienthello-inl.h
index 84cce30154..019d7188de 100644
--- a/src/node_crypto_clienthello-inl.h
+++ b/src/node_crypto_clienthello-inl.h
@@ -25,7 +25,6 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "node_crypto_clienthello.h"
-#include "util.h"
 #include "util-inl.h"
 
 namespace node {
diff --git a/src/node_crypto_clienthello.cc b/src/node_crypto_clienthello.cc
index 65b5dff7f7..d4d222f838 100644
--- a/src/node_crypto_clienthello.cc
+++ b/src/node_crypto_clienthello.cc
@@ -19,7 +19,6 @@
 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-#include "node_crypto_clienthello.h"
 #include "node_crypto_clienthello-inl.h"
 
 namespace node {
diff --git a/src/node_dtrace.cc b/src/node_dtrace.cc
index 39014e7105..ed063fddfa 100644
--- a/src/node_dtrace.cc
+++ b/src/node_dtrace.cc
@@ -24,7 +24,6 @@
 #ifdef HAVE_DTRACE
 #include "node_provider.h"
 #elif HAVE_ETW
-#include "node_win32_etw_provider.h"
 #include "node_win32_etw_provider-inl.h"
 #else
 #define NODE_HTTP_SERVER_REQUEST(arg0, arg1)
diff --git a/src/node_file.cc b/src/node_file.cc
index aed16bf288..acce4d14e6 100644
--- a/src/node_file.cc
+++ b/src/node_file.cc
@@ -23,7 +23,6 @@
 #include "node_internals.h"
 #include "node_stat_watcher.h"
 
-#include "req-wrap.h"
 #include "req-wrap-inl.h"
 #include "string_bytes.h"
 
diff --git a/src/node_http2_core.h b/src/node_http2_core.h
index 75eefc74e6..ae4da047e0 100644
--- a/src/node_http2_core.h
+++ b/src/node_http2_core.h
@@ -3,7 +3,6 @@
 
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
-#include "util.h"
 #include "util-inl.h"
 #include "uv.h"
 #include "nghttp2/nghttp2.h"
diff --git a/src/node_http_parser.cc b/src/node_http_parser.cc
index 11d0aa42b2..9102f9f886 100644
--- a/src/node_http_parser.cc
+++ b/src/node_http_parser.cc
@@ -22,14 +22,10 @@
 #include "node.h"
 #include "node_buffer.h"
 
-#include "async-wrap.h"
 #include "async-wrap-inl.h"
-#include "env.h"
 #include "env-inl.h"
 #include "http_parser.h"
-#include "stream_base.h"
 #include "stream_base-inl.h"
-#include "util.h"
 #include "util-inl.h"
 #include "v8.h"
 
diff --git a/src/node_i18n.cc b/src/node_i18n.cc
index 2e1aeaa4cb..30f421a8b8 100644
--- a/src/node_i18n.cc
+++ b/src/node_i18n.cc
@@ -46,11 +46,8 @@
 
 #include "node.h"
 #include "node_buffer.h"
-#include "env.h"
 #include "env-inl.h"
-#include "util.h"
 #include "util-inl.h"
-#include "base-object.h"
 #include "base-object-inl.h"
 #include "v8.h"
 
diff --git a/src/node_internals.h b/src/node_internals.h
index 1a1eafd8e7..258de16ca7 100644
--- a/src/node_internals.h
+++ b/src/node_internals.h
@@ -25,9 +25,7 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "node.h"
-#include "util.h"
 #include "util-inl.h"
-#include "env.h"
 #include "env-inl.h"
 #include "uv.h"
 #include "v8.h"
diff --git a/src/node_lttng.cc b/src/node_lttng.cc
index 490beb6e40..1f6f4322a5 100644
--- a/src/node_lttng.cc
+++ b/src/node_lttng.cc
@@ -21,7 +21,6 @@
 #define NODE_GC_DONE(arg0, arg1, arg2)
 #endif
 
-#include "env.h"
 #include "env-inl.h"
 
 namespace node {
diff --git a/src/node_perf.h b/src/node_perf.h
index 6699272e88..ba7a326471 100644
--- a/src/node_perf.h
+++ b/src/node_perf.h
@@ -6,7 +6,6 @@
 #include "node.h"
 #include "node_perf_common.h"
 #include "env.h"
-#include "base-object.h"
 #include "base-object-inl.h"
 
 #include "v8.h"
diff --git a/src/node_serdes.cc b/src/node_serdes.cc
index f477016ec0..4e99513a5f 100644
--- a/src/node_serdes.cc
+++ b/src/node_serdes.cc
@@ -1,6 +1,5 @@
 #include "node_internals.h"
 #include "node_buffer.h"
-#include "base-object.h"
 #include "base-object-inl.h"
 
 namespace node {
diff --git a/src/node_stat_watcher.cc b/src/node_stat_watcher.cc
index 2e5f793def..c5b436d8f3 100644
--- a/src/node_stat_watcher.cc
+++ b/src/node_stat_watcher.cc
@@ -20,11 +20,8 @@
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include "node_stat_watcher.h"
-#include "async-wrap.h"
 #include "async-wrap-inl.h"
-#include "env.h"
 #include "env-inl.h"
-#include "util.h"
 #include "util-inl.h"
 
 #include <string.h>
diff --git a/src/node_url.cc b/src/node_url.cc
index e7a0b47194..49c005a23b 100644
--- a/src/node_url.cc
+++ b/src/node_url.cc
@@ -1,6 +1,5 @@
 #include "node_url.h"
 #include "node_internals.h"
-#include "base-object.h"
 #include "base-object-inl.h"
 #include "node_i18n.h"
 
diff --git a/src/node_url.h b/src/node_url.h
index 503fb21e0d..872f2fbc97 100644
--- a/src/node_url.h
+++ b/src/node_url.h
@@ -4,7 +4,6 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "node.h"
-#include "env.h"
 #include "env-inl.h"
 
 #include <string>
diff --git a/src/node_v8.cc b/src/node_v8.cc
index 352b4b334a..695a2bf323 100644
--- a/src/node_v8.cc
+++ b/src/node_v8.cc
@@ -20,9 +20,7 @@
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include "node.h"
-#include "env.h"
 #include "env-inl.h"
-#include "util.h"
 #include "util-inl.h"
 #include "v8.h"
 
diff --git a/src/node_win32_etw_provider.cc b/src/node_win32_etw_provider.cc
index 8a854767d6..11694d7d0e 100644
--- a/src/node_win32_etw_provider.cc
+++ b/src/node_win32_etw_provider.cc
@@ -19,7 +19,6 @@
 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-#include "node_win32_etw_provider.h"
 #include "node_etw_provider.h"
 #include "node_win32_etw_provider-inl.h"
 
diff --git a/src/node_zlib.cc b/src/node_zlib.cc
index 3158c3a709..9e63a37302 100644
--- a/src/node_zlib.cc
+++ b/src/node_zlib.cc
@@ -22,11 +22,8 @@
 #include "node.h"
 #include "node_buffer.h"
 
-#include "async-wrap.h"
 #include "async-wrap-inl.h"
-#include "env.h"
 #include "env-inl.h"
-#include "util.h"
 #include "util-inl.h"
 
 #include "v8.h"
diff --git a/src/pipe_wrap.cc b/src/pipe_wrap.cc
index b01af7c09d..7e93366f1b 100644
--- a/src/pipe_wrap.cc
+++ b/src/pipe_wrap.cc
@@ -23,7 +23,6 @@
 
 #include "async-wrap.h"
 #include "connection_wrap.h"
-#include "env.h"
 #include "env-inl.h"
 #include "handle_wrap.h"
 #include "node.h"
@@ -32,7 +31,6 @@
 #include "connect_wrap.h"
 #include "stream_wrap.h"
 #include "util-inl.h"
-#include "util.h"
 
 namespace node {
 
diff --git a/src/process_wrap.cc b/src/process_wrap.cc
index d3d0451005..ed3a699675 100644
--- a/src/process_wrap.cc
+++ b/src/process_wrap.cc
@@ -19,11 +19,9 @@
 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-#include "env.h"
 #include "env-inl.h"
 #include "handle_wrap.h"
 #include "node_wrap.h"
-#include "util.h"
 #include "util-inl.h"
 
 #include <string.h>
diff --git a/src/req-wrap-inl.h b/src/req-wrap-inl.h
index f5d93b6ee8..584db492fc 100644
--- a/src/req-wrap-inl.h
+++ b/src/req-wrap-inl.h
@@ -4,11 +4,8 @@
 #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS
 
 #include "req-wrap.h"
-#include "async-wrap.h"
 #include "async-wrap-inl.h"
-#include "env.h"
 #include "env-inl.h"
-#include "util.h"
 #include "util-inl.h"
 #include "uv.h"
 
diff --git a/src/signal_wrap.cc b/src/signal_wrap.cc
index 048a3de4be..70b831132b 100644
--- a/src/signal_wrap.cc
+++ b/src/signal_wrap.cc
@@ -19,12 +19,9 @@
 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-#include "async-wrap.h"
 #include "async-wrap-inl.h"
-#include "env.h"
 #include "env-inl.h"
 #include "handle_wrap.h"
-#include "util.h"
 #include "util-inl.h"
 #include "v8.h"
 
diff --git a/src/stream_base-inl.h b/src/stream_base-inl.h
index e0e8c32f8e..3d265d68ff 100644
--- a/src/stream_base-inl.h
+++ b/src/stream_base-inl.h
@@ -6,7 +6,6 @@
 #include "stream_base.h"
 
 #include "node.h"
-#include "env.h"
 #include "env-inl.h"
 #include "v8.h"
 
diff --git a/src/stream_base.cc b/src/stream_base.cc
index a923fc669f..c6aca1694f 100644
--- a/src/stream_base.cc
+++ b/src/stream_base.cc
@@ -1,14 +1,11 @@
-#include "stream_base.h"
 #include "stream_base-inl.h"
 #include "stream_wrap.h"
 
 #include "node.h"
 #include "node_buffer.h"
-#include "env.h"
 #include "env-inl.h"
 #include "js_stream.h"
 #include "string_bytes.h"
-#include "util.h"
 #include "util-inl.h"
 #include "v8.h"
 
diff --git a/src/stream_base.h b/src/stream_base.h
index 7557d61055..dedae53462 100644
--- a/src/stream_base.h
+++ b/src/stream_base.h
@@ -5,7 +5,6 @@
 
 #include "env.h"
 #include "async-wrap.h"
-#include "req-wrap.h"
 #include "req-wrap-inl.h"
 #include "node.h"
 #include "util.h"
diff --git a/src/stream_wrap.cc b/src/stream_wrap.cc
index 0107cbad2d..01022c9174 100644
--- a/src/stream_wrap.cc
+++ b/src/stream_wrap.cc
@@ -20,20 +20,16 @@
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include "stream_wrap.h"
-#include "stream_base.h"
 #include "stream_base-inl.h"
 
 #include "env-inl.h"
-#include "env.h"
 #include "handle_wrap.h"
 #include "node_buffer.h"
 #include "node_counters.h"
 #include "pipe_wrap.h"
-#include "req-wrap.h"
 #include "req-wrap-inl.h"
 #include "tcp_wrap.h"
 #include "udp_wrap.h"
-#include "util.h"
 #include "util-inl.h"
 
 #include <stdlib.h>  // abort()
diff --git a/src/string_bytes.h b/src/string_bytes.h
index e46fa8227b..0e38e017ab 100644
--- a/src/string_bytes.h
+++ b/src/string_bytes.h
@@ -28,7 +28,6 @@
 
 #include "v8.h"
 #include "node.h"
-#include "env.h"
 #include "env-inl.h"
 #include "util.h"
 
diff --git a/src/tcp_wrap.cc b/src/tcp_wrap.cc
index b402fd494e..a04730107c 100644
--- a/src/tcp_wrap.cc
+++ b/src/tcp_wrap.cc
@@ -22,14 +22,12 @@
 #include "tcp_wrap.h"
 
 #include "connection_wrap.h"
-#include "env.h"
 #include "env-inl.h"
 #include "handle_wrap.h"
 #include "node_buffer.h"
 #include "node_wrap.h"
 #include "connect_wrap.h"
 #include "stream_wrap.h"
-#include "util.h"
 #include "util-inl.h"
 
 #include <stdlib.h>
diff --git a/src/timer_wrap.cc b/src/timer_wrap.cc
index e398a471e7..aabde9a613 100644
--- a/src/timer_wrap.cc
+++ b/src/timer_wrap.cc
@@ -19,12 +19,9 @@
 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-#include "async-wrap.h"
 #include "async-wrap-inl.h"
-#include "env.h"
 #include "env-inl.h"
 #include "handle_wrap.h"
-#include "util.h"
 #include "util-inl.h"
 
 #include <stdint.h>
diff --git a/src/tls_wrap.cc b/src/tls_wrap.cc
index 63e3494047..3315267330 100644
--- a/src/tls_wrap.cc
+++ b/src/tls_wrap.cc
@@ -20,16 +20,14 @@
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include "tls_wrap.h"
-#include "async-wrap.h"
 #include "async-wrap-inl.h"
 #include "node_buffer.h"  // Buffer
 #include "node_crypto.h"  // SecureContext
 #include "node_crypto_bio.h"  // NodeBIO
-#include "node_crypto_clienthello.h"  // ClientHelloParser
+// ClientHelloParser
 #include "node_crypto_clienthello-inl.h"
 #include "node_counters.h"
 #include "node_internals.h"
-#include "stream_base.h"
 #include "stream_base-inl.h"
 
 namespace node {
diff --git a/src/tty_wrap.cc b/src/tty_wrap.cc
index 10976ae156..7851b57b32 100644
--- a/src/tty_wrap.cc
+++ b/src/tty_wrap.cc
@@ -21,15 +21,12 @@
 
 #include "tty_wrap.h"
 
-#include "env.h"
 #include "env-inl.h"
 #include "handle_wrap.h"
 #include "node_buffer.h"
 #include "node_wrap.h"
-#include "req-wrap.h"
 #include "req-wrap-inl.h"
 #include "stream_wrap.h"
-#include "util.h"
 #include "util-inl.h"
 
 namespace node {
diff --git a/src/udp_wrap.cc b/src/udp_wrap.cc
index 0461ef6a3b..27d232f2aa 100644
--- a/src/udp_wrap.cc
+++ b/src/udp_wrap.cc
@@ -20,13 +20,10 @@
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include "udp_wrap.h"
-#include "env.h"
 #include "env-inl.h"
 #include "node_buffer.h"
 #include "handle_wrap.h"
-#include "req-wrap.h"
 #include "req-wrap-inl.h"
-#include "util.h"
 #include "util-inl.h"
 
 #include <stdlib.h>
diff --git a/src/udp_wrap.h b/src/udp_wrap.h
index 5be603d62e..fe9256bcc6 100644
--- a/src/udp_wrap.h
+++ b/src/udp_wrap.h
@@ -27,7 +27,6 @@
 #include "async-wrap.h"
 #include "env.h"
 #include "handle_wrap.h"
-#include "req-wrap.h"
 #include "req-wrap-inl.h"
 #include "uv.h"
 #include "v8.h"
diff --git a/src/uv.cc b/src/uv.cc
index 260aae92a7..a13a0430c1 100644
--- a/src/uv.cc
+++ b/src/uv.cc
@@ -21,7 +21,6 @@
 
 #include "uv.h"
 #include "node.h"
-#include "env.h"
 #include "env-inl.h"
 
 namespace node {