diff --git a/src/wayland/meta-wayland-keyboard.c b/src/wayland/meta-wayland-keyboard.c
index d4ae4508d..167293ca7 100644
--- a/src/wayland/meta-wayland-keyboard.c
+++ b/src/wayland/meta-wayland-keyboard.c
@@ -89,7 +89,7 @@ unbind_resource (struct wl_resource *resource)
 }
 
 static int
-create_anonymous_file (off_t size,
+create_anonymous_file (off_t    size,
                        GError **error)
 {
   static const char template[] = "mutter-shared-XXXXXX";