diff --git a/websocket_server.c b/websocket_server.c
index ab5946b..2f074a0 100644
--- a/websocket_server.c
+++ b/websocket_server.c
@@ -138,6 +138,7 @@ int ws_server_start() {
 int ws_server_stop() {
   if(!xtask) return 0;
   vTaskDelete(xtask);
+  xtask = NULL;
   return 1;
 }