diff --git a/frappyman.py b/frappyman.py
index 59e8c8d..9605a41 100644
--- a/frappyman.py
+++ b/frappyman.py
@@ -234,7 +234,7 @@ class FrappyManager(ServiceManager):
             exec(f.read(), namespace, local)
         return namespace.description, local.get('sea_cfg', namespace.sea_cfg)
 
-    def cfg_details(self, ins, service, cfg):
+    def cfg_details(self, ins, service, cfgfile):
         namespace = Namespace(self, ins, service)
         if cfgfile:
             return self.get_cfg_details(namespace, cfgfile)