diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index 8d29273307..1de7dc8f34 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -506,7 +506,7 @@ gtk_base_c_sources =            \
 	gtkimmodule.c		\
 	gtkimmulticontext.c	\
 	gtkinfobar.c		\
-	#gtkinputdialog.c	\
+	gtkinputdialog.c	\
 	gtkinvisible.c		\
 	gtkitem.c		\
 	gtkkeyhash.c		\