diff --git a/source/dub/generators/generator.d b/source/dub/generators/generator.d
index 8010988ef..68060a2c9 100644
--- a/source/dub/generators/generator.d
+++ b/source/dub/generators/generator.d
@@ -283,10 +283,14 @@ private void finalizeGeneration(string pack, in BuildSettings buildsettings, Pat
 				auto src = Path(f);
 				if (!src.absolute) src = pack_path ~ src;
 				auto dst = target_path ~ Path(f).head;
+				if (src == dst) {
+					logDiagnostic("Skipping copy of %s (same source and destination)", f);
+					continue;
+				}
 				logDiagnostic("  %s to %s", src.toNativeString(), dst.toNativeString());
 				try {
 					copyFile(src, dst, true);
-				} catch logWarn("Failed to copy to %s", dst.toNativeString());
+				} catch(Exception e) logWarn("Failed to copy to %s: %s", dst.toNativeString(), e.msg);
 			}
 		}
 	}
diff --git a/source/dub/internal/vibecompat/core/file.d b/source/dub/internal/vibecompat/core/file.d
index 5a806a3db..bfa9caccf 100644
--- a/source/dub/internal/vibecompat/core/file.d
+++ b/source/dub/internal/vibecompat/core/file.d
@@ -104,6 +104,8 @@ void moveFile(string from, string to)
 */
 void copyFile(Path from, Path to, bool overwrite = false)
 {
+	enforce(existsFile(from), "Source file doesn not exist.");
+
 	if (existsFile(to)) {
 		enforce(overwrite, "Destination file already exists.");
 		// remove file before copy to allow "overwriting" files that are in