diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index 46d2ed0aa2..cb3f0cc673 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -584,6 +584,7 @@ gtk_private_h_sources =		\
 	gtkgesturemultipressprivate.h	\
 	gtkgesturepanprivate.h	\
 	gtkgesturerotateprivate.h	\
+	gtkgesturesingleprivate.h	\
 	gtkgestureswipeprivate.h	\
 	gtkgesturezoomprivate.h	\
 	gtkheaderbarprivate.h	\