diff --git a/jedi/api/completion.py b/jedi/api/completion.py
index eaddef9f..fb15031b 100644
--- a/jedi/api/completion.py
+++ b/jedi/api/completion.py
@@ -1,5 +1,3 @@
-from itertools import chain
-
 from jedi.parser import token
 from jedi.parser import tree
 from jedi import debug
@@ -10,7 +8,6 @@ from jedi.evaluate import imports
 from jedi.api import keywords
 from jedi.evaluate import compiled
 from jedi.evaluate.helpers import call_of_leaf
-from jedi.evaluate.finder import global_names_dict_generator, filter_definition_names
 from jedi.evaluate.filters import get_global_filters
 
 
@@ -198,13 +195,8 @@ class Completion:
         completion_names = []
         debug.dbg('trailer completion scopes: %s', scopes)
         for s in scopes:
-            names = []
-            for names_dict in s.names_dicts(search_global=False):
-                names += chain.from_iterable(names_dict.values())
-
-            completion_names += filter_definition_names(
-                names, self._module.get_statement_for_position(self._position)
-            )
+            for filter in s.get_filters(search_global=False):
+                completion_names += filter.values()
         return completion_names
 
     def _parse_dotted_names(self, nodes):
diff --git a/jedi/evaluate/compiled/__init__.py b/jedi/evaluate/compiled/__init__.py
index eb5c97b7..26bf98dc 100644
--- a/jedi/evaluate/compiled/__init__.py
+++ b/jedi/evaluate/compiled/__init__.py
@@ -157,7 +157,7 @@ class CompiledObject(Base):
     def names_dicts(self, search_global, is_instance=False):
         return self._names_dict_ensure_one_dict(is_instance)
 
-    def get_filters(self, search_global, is_instance=False, until_position=None):
+    def get_filters(self, search_global=False, is_instance=False, until_position=None):
         yield self._ensure_one_filter(is_instance)
 
     @memoize_method
diff --git a/jedi/evaluate/representation.py b/jedi/evaluate/representation.py
index 763f50a0..d417b858 100644
--- a/jedi/evaluate/representation.py
+++ b/jedi/evaluate/representation.py
@@ -554,7 +554,8 @@ class Class(use_metaclass(CachedMetaClass, Wrapper)):
         else:
             for scope in self.py__mro__():
                 if isinstance(scope, compiled.CompiledObject):
-                    raise NotImplementedError
+                    for filter in scope.get_filters():
+                        yield filter
                 else:
                     yield ParserTreeFilter(self._evaluator, self.base)