diff --git a/backups/app/specs/specs.py b/backups/app/specs/specs.py
index b171a72..f2971ca 100644
--- a/backups/app/specs/specs.py
+++ b/backups/app/specs/specs.py
@@ -34,7 +34,7 @@ class Spec:
             for path in tarballs[self.limit - 1:]:
                 path.unlink()
 
-    def notify(status_code):
+    def notify(self, status_code):
         if status_code:
             if "failure" not in self.events:
                 return