diff --git a/src/sonic-yang-mgmt/sonic_yang_ext.py b/src/sonic-yang-mgmt/sonic_yang_ext.py
index 1f0a072be450..e85cdb42ff0f 100644
--- a/src/sonic-yang-mgmt/sonic_yang_ext.py
+++ b/src/sonic-yang-mgmt/sonic_yang_ext.py
@@ -377,7 +377,8 @@ def _xlateContainer(self, model, yang, config, table):
 
         ## Handle other leaves in container,
         leafDict = self._createLeafDict(model)
-        for vKey in configC.keys():
+        vKeys = list(configC.keys())
+        for vKey in vKeys:
             #vkey must be a leaf\leaf-list\choice in container
             if leafDict.get(vKey):
                 self.sysLog(syslog.LOG_DEBUG, "xlateContainer vkey {}".format(vKey))