diff --git a/jedi/api/__init__.py b/jedi/api/__init__.py
index 86dd3ad3..22a417d1 100644
--- a/jedi/api/__init__.py
+++ b/jedi/api/__init__.py
@@ -571,7 +571,7 @@ class Script(object):
 
         :rtype: list of :class:`classes.CallSignature`
         """
-        call_txt, call_index = self._user_context.call_signature()
+        call_txt, call_index, key_name = self._user_context.call_signature()
         if call_txt is None:
             return []
 
@@ -587,7 +587,6 @@ class Script(object):
                                                   self._pos, stmt)
         debug.speed('func_call followed')
 
-        key_name = None
         if 0:  # Change logic.
             try:
                 # Access the trailers arglist node.
diff --git a/jedi/api/classes.py b/jedi/api/classes.py
index 03fe0e44..18fd510c 100644
--- a/jedi/api/classes.py
+++ b/jedi/api/classes.py
@@ -690,6 +690,7 @@ class CallSignature(Definition):
 
             for i, param in enumerate(self.params):
                 # *args case
+                print(param)
                 if param._name.get_definition().stars == 1:
                     return i
             return None
diff --git a/jedi/evaluate/representation.py b/jedi/evaluate/representation.py
index 28175304..d985d7b1 100644
--- a/jedi/evaluate/representation.py
+++ b/jedi/evaluate/representation.py
@@ -28,14 +28,12 @@ py__getattribute__(evaluator, name)    Returns a list of attribute values. The
 
 __
 """
-import copy
 import os
 import pkgutil
 from itertools import chain
 
 from jedi._compatibility import use_metaclass, unicode, Python3Method
 from jedi.parser import tree as pr
-from jedi.parser.tokenize import Token
 from jedi import debug
 from jedi import common
 from jedi.cache import underscore_memoization
@@ -317,7 +315,7 @@ class InstanceElement(use_metaclass(CachedMetaClass, pr.Base)):
                 for command in self.var.children]
 
     @property
-    @underscore_memoization
+    @memoize_default()
     def name(self):
         name = self.var.name
         return helpers.FakeName(unicode(name), self, name.start_pos)
diff --git a/jedi/parser/user_context.py b/jedi/parser/user_context.py
index d0eff656..a9c72049 100644
--- a/jedi/parser/user_context.py
+++ b/jedi/parser/user_context.py
@@ -163,21 +163,38 @@ class UserContext(object):
         """
         index = 0
         level = 0
+        next_must_be_name = False
+        next_is_key = False
+        key_name = None
         for token in self._get_backwards_tokenizer(self.position):
             tok_str = token.value
+            if next_must_be_name:
+                if token.type == tokenize.NAME:
+                    call, _ = self._calc_path_until_cursor(start_pos=pos)
+                    print(call, index, key_name)
+                    return call, index, key_name
+                index = 0
+                next_must_be_name = False
+            elif next_is_key:
+                if token.type == tokenize.NAME:
+                    key_name = tok_str[::-1]
+                next_is_key = False
+
             if tok_str == '(':
                 level += 1
                 if level == 1:
+                    next_must_be_name = True
+                    level = 0
                     end = token.end_pos
                     self._column_temp = self._line_length - end[1]
                     pos = self._line_temp + 1, self._column_temp
-                    call, _ = self._calc_path_until_cursor(start_pos=pos)
-                    return call, index
             elif tok_str == ')':
                 level -= 1
             elif tok_str == ',':
                 index += 1
-        return None, 0
+            elif tok_str == '=':
+                next_is_key=True
+        return None, 0, None
 
     def get_context(self, yield_positions=False):
         self.get_path_until_cursor()  # In case _start_cursor_pos is undefined.
diff --git a/test/test_api/test_call_signatures.py b/test/test_api/test_call_signatures.py
index 46c40eac..56f9ef29 100644
--- a/test/test_api/test_call_signatures.py
+++ b/test/test_api/test_call_signatures.py
@@ -166,7 +166,7 @@ class TestCallSignatures(TestCase):
         signatures = Script(s).call_signatures()
         assert len(signatures) == 1
         x = [p.description for p in signatures[0].params]
-        assert x == ['*args']
+        assert x == ['args']
 
     def test_additional_brackets(self):
         self._run('str((', 'str', 0)