diff --git a/awx/main/credential_plugins/aim.py b/awx/main/credential_plugins/aim.py
index be0232357f..32a3a8173d 100644
--- a/awx/main/credential_plugins/aim.py
+++ b/awx/main/credential_plugins/aim.py
@@ -70,11 +70,13 @@ def aim_backend(**kwargs):
     client_cert = kwargs.get('client_cert', None)
     client_key = kwargs.get('client_key', None)
     verify = kwargs['verify']
-    webservice_id = kwargs.get('webservice_id', 'AIMWebService')
+    webservice_id = kwargs.get('webservice_id', None)
     app_id = kwargs['app_id']
     object_query = kwargs['object_query']
     object_query_format = kwargs['object_query_format']
     reason = kwargs.get('reason', None)
+    if webservice_id is None:
+        webservice_id = 'AIMWebService'
 
     query_params = {
         'AppId': app_id,