diff --git a/jedi/evaluate/__init__.py b/jedi/evaluate/__init__.py
index b6380642..c3f114b3 100644
--- a/jedi/evaluate/__init__.py
+++ b/jedi/evaluate/__init__.py
@@ -318,17 +318,16 @@ class Evaluator(object):
 
         debug.dbg('execute: %s %s', obj, params)
         try:
+            # Some stdlib functions like super(), namedtuple(), etc. have been
+            # hard-coded in Jedi to support them.
             return stdlib.execute(self, obj, params)
         except stdlib.NotInStdLib:
             pass
 
         if isinstance(obj, iterable.GeneratorMethod):
-            return obj.execute()
+            return obj.py__call__(params)
         elif obj.isinstance(compiled.CompiledObject):
-            if obj.is_executable_class():
-                return [er.Instance(self, obj, params)]
-            else:
-                return list(obj.execute_function(self, params))
+            return obj.py__call__(self, params)
         elif obj.isinstance(er.Class):
             # There maybe executions of executions.
             return obj.py__call__(params)
diff --git a/jedi/evaluate/compiled/__init__.py b/jedi/evaluate/compiled/__init__.py
index 3ae14f7c..e0f23bb8 100644
--- a/jedi/evaluate/compiled/__init__.py
+++ b/jedi/evaluate/compiled/__init__.py
@@ -32,6 +32,13 @@ class CompiledObject(Base):
         self.obj = obj
         self.parent = parent
 
+    def py__call__(self, evaluator, params):
+        if inspect.isclass(self.obj):
+            from jedi.evaluate.representation import Instance
+            return [Instance(evaluator, self, params)]
+        else:
+            return list(self._execute_function(evaluator, params))
+
     @property
     def doc(self):
         return inspect.getdoc(self.obj) or ''
@@ -73,9 +80,6 @@ class CompiledObject(Base):
                 or inspect.ismethoddescriptor(cls):
             return 'function'
 
-    def is_executable_class(self):
-        return inspect.isclass(self.obj)
-
     @underscore_memoization
     def _cls(self):
         # Ensures that a CompiledObject is returned that is not an instance (like list)
@@ -148,7 +152,7 @@ class CompiledObject(Base):
         # might not exist sometimes (raises AttributeError)
         return self._cls().obj.__name__
 
-    def execute_function(self, evaluator, params):
+    def _execute_function(self, evaluator, params):
         if self.type() != 'function':
             return
 
diff --git a/jedi/evaluate/iterable.py b/jedi/evaluate/iterable.py
index b4d282dc..67402a31 100644
--- a/jedi/evaluate/iterable.py
+++ b/jedi/evaluate/iterable.py
@@ -94,7 +94,8 @@ class GeneratorMethod(object):
         self._builtin_func = builtin_func
         self._generator = generator
 
-    def execute(self):
+    def py__call__(self, params):
+        # TODO add TypeError if params are given.
         return self._generator.iter_content()
 
     def __getattr__(self, name):
diff --git a/jedi/evaluate/representation.py b/jedi/evaluate/representation.py
index ec69b580..fda55d14 100644
--- a/jedi/evaluate/representation.py
+++ b/jedi/evaluate/representation.py
@@ -248,6 +248,9 @@ class InstanceElement(use_metaclass(CachedMetaClass, pr.Base)):
         return self.var.is_callable()
 
     def py__call__(self, params, evaluate_generator=False):
+        # TODO this should be working nicer.
+        if isinstance(self.var, compiled.CompiledObject):
+            return self.var.py__call__(self._evaluator, params)
         stmts = FunctionExecution(self._evaluator, self, params) \
             .get_return_types(evaluate_generator)
         return imports.follow_imports(self._evaluator, stmts)