diff --git a/src/websockets.c b/src/websockets.c
index 530b045af..f3443517a 100644
--- a/src/websockets.c
+++ b/src/websockets.c
@@ -198,7 +198,6 @@ static int callback_mqtt(
 					HASH_DELETE(hh_sock, db.contexts_by_sock, mosq);
 					mosq->sock = INVALID_SOCKET;
 					mux__delete(mosq);
-					mosq->listener->client_count--;
 				}
 				mosq->wsi = NULL;
 #ifdef WITH_TLS