diff --git a/tests/client-test.c b/tests/client-test.c
index 55215109..5cf374dd 100644
--- a/tests/client-test.c
+++ b/tests/client-test.c
@@ -32,6 +32,7 @@
 #include <sys/stat.h>
 
 #include "wayland-server.h"
+#include "wayland-private.h"
 #include "test-runner.h"
 
 struct client_destroy_listener {