diff --git a/jedi/evaluate/context/function.py b/jedi/evaluate/context/function.py
index e0d92815..31f61e51 100644
--- a/jedi/evaluate/context/function.py
+++ b/jedi/evaluate/context/function.py
@@ -327,7 +327,8 @@ class FunctionExecutionContext(TreeContext):
                 # The contravariant doesn't seem to be defined.
                 generics = (yield_contexts.py__class__(), NO_CONTEXTS)
                 return ContextSet(
-                    AnnotatedSubClass(c.stub_context, generics) for c in async_generator_classes
+                    # In Python 3.6 AsyncGenerator is still a class.
+                    AnnotatedSubClass(getattr(c, 'stub_context', c), generics) for c in async_generator_classes
                 ).execute_annotation()
             else:
                 if evaluator.environment.version_info < (3, 5):
@@ -337,7 +338,7 @@ class FunctionExecutionContext(TreeContext):
                 # Only the first generic is relevant.
                 generics = (return_contexts.py__class__(), NO_CONTEXTS, NO_CONTEXTS)
                 return ContextSet(
-                    AnnotatedSubClass(c.stub_context, generics) for c in async_classes
+                    AnnotatedSubClass(getattr(c, 'stub_context', c), generics) for c in async_classes
                 ).execute_annotation()
         else:
             if is_generator:
diff --git a/test/completion/keywords.py b/test/completion/keywords.py
index 9631e8d6..fa9bf52d 100644
--- a/test/completion/keywords.py
+++ b/test/completion/keywords.py
@@ -18,13 +18,13 @@ b; continue
 b; continu
 
 #? []
-c + brea
+c + pass
 
 #? []
-a + break
+a + pass
 
-#? ['break']
-b; break
+#? ['pass']
+b; pass
 
 # -----------------
 # Keywords should not appear everywhere.