diff --git a/app/Makefile.am b/app/Makefile.am
index f6a384b67f..5906066e37 100644
--- a/app/Makefile.am
+++ b/app/Makefile.am
@@ -177,6 +177,7 @@ gimp_SOURCES = \
 	levels.c		\
 	levels.h		\
 	linked.h		\
+	linked.c		\
 	magnify.c		\
 	magnify.h		\
 	main.c			\