diff --git a/desmume/src/gtk/Makefile.am b/desmume/src/gtk/Makefile.am
index 5b1dfa867..c645539c2 100644
--- a/desmume/src/gtk/Makefile.am
+++ b/desmume/src/gtk/Makefile.am
@@ -14,6 +14,7 @@ desmume_SOURCES = \
 	globals.h \
 	../sndsdl.c \
 	../ctrlssdl.h ../ctrlssdl.c \
+	gdk_3Demu.c gdk_3Demu.h \
 	 main.c
 desmume_LDADD = ../libdesmume.a $(SDL_LIBS) $(GTK_LIBS) $(GTKGLEXT_LIBS)
 desmume_CFLAGS = $(SDL_CFLAGS) $(GTK_CFLAGS) $(GTKGLEXT_CFLAGS)