diff --git a/protocol/Makefile.am b/protocol/Makefile.am
index 4d3a8153a..0efd1f509 100644
--- a/protocol/Makefile.am
+++ b/protocol/Makefile.am
@@ -1 +1,6 @@
-EXTRA_DIST = xserver.xml
+NULL =
+
+EXTRA_DIST = \
+	gtk-shell.xml \
+	xserver.xml \
+	$(NULL)