diff --git a/Makefile.in b/Makefile.in
index f274cb588..257a58db6 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -177,6 +177,7 @@ NSConcreteValue.m \
 NSCString.m \
 NSDeallocateObject.m \
 NSDictionary.m \
+NSEnumerator.m \
 NSException.m \
 NSGeometry.m \
 NSNumber.m \