diff --git a/src/backend/wayland/wl_client.c b/src/backend/wayland/wl_client.c
index a216c26..e0e4638 100644
--- a/src/backend/wayland/wl_client.c
+++ b/src/backend/wayland/wl_client.c
@@ -585,6 +585,10 @@ void wl_client_send_protocol(WWindow *wwin, unsigned long protocol,
                                     unsigned long timestamp)
 {
     (void)protocol; (void)timestamp;
+    if (wwin->flags.internal_window) {
+        wUnmanageWindow(wwin, False, False);
+        return;
+    }
     wm_backend->client_close(wwin->client_win);
 }
 
diff --git a/src/window.c b/src/window.c
index 2204422..cd10c18 100644
--- a/src/window.c
+++ b/src/window.c
@@ -1425,6 +1425,7 @@ WWindow *wManageInternalWindow(WScreen *scr, WNativeWindow window, WNativeWindow
 	wwin->frame->on_mousedown_titlebar = titlebarMouseDown;
 	wwin->frame->on_dblclick_titlebar = titlebarDblClick;
 	wwin->frame->on_mousedown_resizebar = resizebarMouseDown;
+	wwin->protocols.DELETE_WINDOW = 1;
 	wwin->client.y += wwin->frame->top_width;
 
 	wm_backend->client_reparent(wwin->client_win, wwin->frame->core->window,