diff --git a/Source/Makefile.in b/Source/Makefile.in
index 334d32fd8..5e3db8e05 100644
--- a/Source/Makefile.in
+++ b/Source/Makefile.in
@@ -448,6 +448,7 @@ include/NSCharacterSet.h \
 include/NSCoder.h \
 include/NSConcreteNumber.h \
 include/NSConcreteValue.h \
+include/NSConnection.h \
 include/NSData.h \
 include/NSDate.h \
 include/NSDictionary.h \