diff --git a/jedi/api/helpers.py b/jedi/api/helpers.py
index 98685918..e8ce3881 100644
--- a/jedi/api/helpers.py
+++ b/jedi/api/helpers.py
@@ -205,7 +205,6 @@ def filter_follow_imports(names, follow_builtin_imports=False):
 
 class CallDetails:
     def __init__(self, bracket_leaf, children, position):
-        ['bracket_leaf', 'call_index', 'keyword_name_str']
         self.bracket_leaf = bracket_leaf
         self._children = children
         self._position = position