diff --git a/objsamples/sample_dataextension.py b/objsamples/sample_dataextension.py
index ae844ca..9e2ea64 100644
--- a/objsamples/sample_dataextension.py
+++ b/objsamples/sample_dataextension.py
@@ -71,7 +71,7 @@
     myDEColumn = ET_Client.ET_DataExtension_Column()
     myDEColumn.auth_stub = stubObj
     myDEColumn.props = ["Name"]
-    myDEColumn.search_filter = {'Property' : 'CustomerKey','SimpleOperator' : 'equals','Value' : NameOfDE}
+    myDEColumn.search_filter = {'Property' : 'DataExtension.CustomerKey','SimpleOperator' : 'equals','Value' : NameOfDE}
     getResponse = myDEColumn.get()
     print('Retrieve Status: ' + str(getResponse.status))
     print('Code: ' + str(getResponse.code))