diff --git a/gb.gtk3/src/Makefile.am b/gb.gtk3/src/Makefile.am
index 718cf538e..ff5a92c52 100644
--- a/gb.gtk3/src/Makefile.am
+++ b/gb.gtk3/src/Makefile.am
@@ -103,4 +103,5 @@ gb_gtk3_la_SOURCES = \
 	sm/gnome-marshal.h \
 	sm/gnome-marshal.c \
 	sm/gnometypebuiltins.h \
-	sm/gnometypebuiltins.c
+	sm/gnometypebuiltins.c \
+	sm/sm.h