diff --git a/tests/system-test/0-others/taosShellError.py b/tests/system-test/0-others/taosShellError.py
index 7a95a76df8..7f1078e58c 100644
--- a/tests/system-test/0-others/taosShellError.py
+++ b/tests/system-test/0-others/taosShellError.py
@@ -86,7 +86,7 @@ class TDTestCase:
     updatecfgDict["serverPort"] = serverPort
     updatecfgDict["firstEp"]    = hostname + ':' + serverPort
     updatecfgDict["secondEp"]   = hostname + ':' + serverPort
-    clientCfgDict["fqdn"] = hostname
+    updateCfgDict["fqdn"] = hostname
 
     print ("===================: ", updatecfgDict)