diff --git a/tools/marvin/marvin/config/test_data.py b/tools/marvin/marvin/config/test_data.py
index fca24425eac..00497f62a43 100644
--- a/tools/marvin/marvin/config/test_data.py
+++ b/tools/marvin/marvin/config/test_data.py
@@ -228,7 +228,7 @@ test_data = {
         "name": 'Test Nw off isolated persistent',
         "displaytext": 'Test Nw off isolated persistent',
         "guestiptype": 'Isolated',
-        "supportedservices": 'Dhcp,Dns,SourceNat,PortForwarding, Lb',
+        "supportedservices": 'Dhcp,Dns,SourceNat,PortForwarding,Lb',
         "traffictype": 'GUEST',
         "ispersistent": 'True',
         "availability": 'Optional',
@@ -1206,4 +1206,4 @@ test_data = {
                 },
                 "ostype": 'CentOS 5.6 (64-bit)',
         }
-}
\ No newline at end of file
+}