diff --git a/lib/core-net/wsi.c b/lib/core-net/wsi.c
index 978d1e80c..a985edb8c 100644
--- a/lib/core-net/wsi.c
+++ b/lib/core-net/wsi.c
@@ -1305,7 +1305,7 @@ lws_mux_mark_immortal(struct lws *wsi)
 			&& !wsi->client_mux_substream
 #endif
 	) {
-		lwsl_wsi_err(wsi, "not mux substream");
+		// lwsl_wsi_err(wsi, "not mux substream");
 		return;
 	}