diff --git a/snippets/python-mode/__missing__ b/snippets/python-mode/__missing__
index bf798515..2a239a07 100644
--- a/snippets/python-mode/__missing__
+++ b/snippets/python-mode/__missing__
@@ -3,5 +3,5 @@
 # key: _missing
 # group: Special methods
 # --
-def __missing__(self):
+def __missing__(self, key):
     return $0