diff --git a/WINGs/wclient_wl.c b/WINGs/wclient_wl.c
index 5bdaec8..361a398 100644
--- a/WINGs/wclient_wl.c
+++ b/WINGs/wclient_wl.c
@@ -403,6 +403,8 @@ wl_client_toplevel_commit_locked(WLClientToplevel *top)
     wl_surface_damage_buffer(top->surface, 0, 0,
                              top->buf->width, top->buf->height);
     wl_surface_commit(top->surface);
+    if (top->ctx && top->ctx->display)
+        wl_display_flush(top->ctx->display);
     top->buf->busy = 1;
     top->mapped = 1;
 }