diff --git a/jedi/api/__init__.py b/jedi/api/__init__.py
index d7b2d5ae6..e33cef132 100644
--- a/jedi/api/__init__.py
+++ b/jedi/api/__init__.py
@@ -277,12 +277,12 @@ def goto(self, line=None, column=None, **kwargs):
         """
         Return the first definition found, while optionally following imports.
         Multiple objects may be returned, because Python itself is a
-        dynamic language, which means depending on an option you can have two
-        different versions of a function.
+        dynamic language, which means you can have two different versions of a
+        function.
 
         :param follow_imports: The goto call will follow imports.
-        :param follow_builtin_imports: If follow_imports is True will decide if
-            it follow builtin imports.
+        :param follow_builtin_imports: If follow_imports is True will try to
+            look up names in builtins (i.e. compiled or extension modules).
         :param only_stubs: Only return stubs for this goto call.
         :param prefer_stubs: Prefer stubs to Python objects for this goto call.
         :rtype: list of :class:`classes.Definition`
@@ -316,7 +316,7 @@ def _goto(self, line, column, follow_imports=False, follow_builtin_imports=False
             names = list(name.goto())
 
         if follow_imports:
-            names = helpers.filter_follow_imports(names)
+            names = helpers.filter_follow_imports(names, follow_builtin_imports)
         names = convert_names(
             names,
             only_stubs=only_stubs,
diff --git a/jedi/inference/gradual/annotation.py b/jedi/inference/gradual/annotation.py
index bda6c20b3..1de87962e 100644
--- a/jedi/inference/gradual/annotation.py
+++ b/jedi/inference/gradual/annotation.py
@@ -285,7 +285,7 @@ def infer_return_for_callable(arguments, param_values, result_values):
             all_type_vars.update(type_var_dict)
 
     return ValueSet.from_sets(
-        v.define_generics(type_var_dict)
+        v.define_generics(all_type_vars)
         if isinstance(v, (DefineGenericBase, TypeVar)) else ValueSet({v})
         for v in result_values
     ).execute_annotation()