diff --git a/src/python/dm/aps_user_db/cli/updateUserFromApsDbCli.py b/src/python/dm/aps_user_db/cli/updateUserFromApsDbCli.py
index eed07df52db1c4a962a9f8071b8f22e764143579..8476e3c36ba1cade22a5bc510d15ab355efa240d 100755
--- a/src/python/dm/aps_user_db/cli/updateUserFromApsDbCli.py
+++ b/src/python/dm/aps_user_db/cli/updateUserFromApsDbCli.py
@@ -23,7 +23,7 @@ class UpdateUserFromApsDbCli(DmCli):
         if configFile is None:
             raise InvalidRequest('Config file must be provided.')
         if not os.path.exists(configFile):
-            raise InvalidArgument('Invalid config file: %s.', configFile)
+            raise InvalidArgument('Invalid config file: %s.' % configFile)
 
     def getBadge(self):
         return self.options.badge
diff --git a/src/python/dm/aps_user_db/cli/updateUsersFromApsDbCli.py b/src/python/dm/aps_user_db/cli/updateUsersFromApsDbCli.py
index afc0e615e3f2fbb1081a674c793dd849e0235af6..6c7c347c75dbedcc65dadc2105a42d1f4a062fe7 100755
--- a/src/python/dm/aps_user_db/cli/updateUsersFromApsDbCli.py
+++ b/src/python/dm/aps_user_db/cli/updateUsersFromApsDbCli.py
@@ -27,7 +27,7 @@ class UpdateUsersFromApsDbCli(DmCli):
         if configFile is None:
             raise InvalidRequest('Config file must be provided.')
         if not os.path.exists(configFile):
-            raise InvalidArgument('Invalid config file: %s.', configFile)
+            raise InvalidArgument('Invalid config file: %s.' % configFile)
 
     def runCommand(self):
         self.parseArgs(usage="""