diff --git a/docs/reference/gtk/Makefile.am b/docs/reference/gtk/Makefile.am
index 9bc86ae454..b99f6b4ce1 100644
--- a/docs/reference/gtk/Makefile.am
+++ b/docs/reference/gtk/Makefile.am
@@ -157,6 +157,7 @@ IGNORE_HFILES = \
 	gtksidebarrowprivate.h		\
 	gtksizegroup-private.h		\
 	gtksizerequestcacheprivate.h	\
+	gtksnapshotprivate.h		\
 	gtkstyleanimationprivate.h	\
 	gtkstylecascadeprivate.h	\
 	gtkstylecontextprivate.h	\