diff --git a/src/rpc/src/ttcpserver.c b/src/rpc/src/ttcpserver.c
index e9452ae0c0..aa236c9d22 100644
--- a/src/rpc/src/ttcpserver.c
+++ b/src/rpc/src/ttcpserver.c
@@ -199,7 +199,7 @@ static void taosProcessTcpData(void *param) {
       if (headLen != sizeof(STaosHeader)) {
         tError("%s read error, headLen:%d", pThreadObj->label, headLen);
         taosCleanUpFdObj(pFdObj);
-        free(buffer);
+        tfree(buffer);
         continue;
       }
 
@@ -215,7 +215,7 @@ static void taosProcessTcpData(void *param) {
       if (leftLen != retLen) {
         tError("%s read error, leftLen:%d retLen:%d", pThreadObj->label, leftLen, retLen);
         taosCleanUpFdObj(pFdObj);
-        free(buffer);
+        tfree(buffer);
         continue;
       }