diff --git a/tools/testClient/deployDataCenter.py b/tools/testClient/deployDataCenter.py
index ae2797c0608..96176874085 100644
--- a/tools/testClient/deployDataCenter.py
+++ b/tools/testClient/deployDataCenter.py
@@ -294,7 +294,7 @@ class deployDataCenters():
             self.config = configGenerator.get_setup_config(self.configFile)
         except:
             raise cloudstackException.InvalidParameterException( \
-                            "Failed to load config" + sys.exc_info())
+                            "Failed to load config %s" %sys.exc_info())
 
         mgt = self.config.mgtSvr[0]