diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index ca449d54d7..7114da8a13 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -393,6 +393,7 @@ gtk_private_h_sources =		\
 	gtktextutil.h		\
 	gtkthemes.h		\
 	gtktoggleactionprivate.h\
+	gtktoolpaletteprivate.h	\
 	gtktreedatalist.h	\
 	gtktreeprivate.h	\
 	gtkwindow-decorate.h	\