diff --git a/src/win_delay_load_hook.cc b/src/win_delay_load_hook.cc
index 5e7f14b2b2..567c4cc8d7 100644
--- a/src/win_delay_load_hook.cc
+++ b/src/win_delay_load_hook.cc
@@ -7,6 +7,8 @@
  * This allows compiled addons to work when the host executable is renamed.
  */
 
+#pragma unmanaged
+
 #ifdef _MSC_VER
 
 #ifndef WIN32_LEAN_AND_MEAN