diff --git a/src/rtos/mqx.c b/src/rtos/mqx.c
index a23a95c34..0ba462c9a 100644
--- a/src/rtos/mqx.c
+++ b/src/rtos/mqx.c
@@ -292,6 +292,12 @@ static int mqx_update_threads(
 	uint16_t task_queue_size = 0;
 	uint32_t active_td_addr = 0;
 
+	if (!rtos->rtos_specific_params)
+		return -3;
+
+	if (!rtos->symbols)
+		return -4;
+
 	/* clear old data */
 	rtos_free_threadlist(rtos);
 	/* check scheduler */