diff --git a/bar.c b/bar.c
index c39e29c..d5be6f5 100644
--- a/bar.c
+++ b/bar.c
@@ -628,6 +628,7 @@ run(struct bar_run_context *run_ctx)
             case XCB_REPARENT_NOTIFY:
             case XCB_CONFIGURE_NOTIFY:
             case XCB_MAP_NOTIFY:
+            case XCB_MAPPING_NOTIFY:
                 /* Just ignore */
                 break;