diff --git a/Source/GNUmakefile b/Source/GNUmakefile
index 00863c7f6..f69b4ee98 100644
--- a/Source/GNUmakefile
+++ b/Source/GNUmakefile
@@ -411,7 +411,6 @@ Foundation/NSGArchiver.h \
 Foundation/NSGArray.h \
 Foundation/NSGAttributedString.h \
 Foundation/NSGCString.h \
-Foundation/NSGDictionary.h \
 Foundation/NSGSet.h \
 Foundation/NSGSequence.h \
 Foundation/NSGString.h \