diff --git a/source/libs/transport/src/transComm.c b/source/libs/transport/src/transComm.c
index 6833594e7d1f56b1612982f13f3057e08ae5bb75..2d6485b346d6a2b6700cdad17750daa8e662a701 100644
--- a/source/libs/transport/src/transComm.c
+++ b/source/libs/transport/src/transComm.c
@@ -240,6 +240,7 @@ void transCtxCleanup(STransCtx* ctx) {
   }
 
   taosHashCleanup(ctx->args);
+  ctx->args = NULL;
 }
 
 void transCtxMerge(STransCtx* dst, STransCtx* src) {