diff --git a/Source/Makefile.in b/Source/Makefile.in
index ac3aa19fa..4c5d5a10f 100644
--- a/Source/Makefile.in
+++ b/Source/Makefile.in
@@ -375,6 +375,7 @@ NSGData.m \
 NSGDictionary.m \
 NSGSet.m \
 NSHashTable.m \
+NSInvocation.m \
 NSLock.m \
 NSMapTable.m \
 NSMethodSignature.m \