diff --git a/jedi/inference/gradual/annotation.py b/jedi/inference/gradual/annotation.py
index 4624f560..bda6c20b 100644
--- a/jedi/inference/gradual/annotation.py
+++ b/jedi/inference/gradual/annotation.py
@@ -278,17 +278,17 @@ def infer_type_vars_for_execution(function, arguments, annotation_dict):
 
 
 def infer_return_for_callable(arguments, param_values, result_values):
-    result = NO_VALUES
+    all_type_vars = {}
     for pv in param_values:
         if pv.array_type == 'list':
             type_var_dict = infer_type_vars_for_callable(arguments, pv.py__iter__())
+            all_type_vars.update(type_var_dict)
 
-            result |= ValueSet.from_sets(
-                v.define_generics(type_var_dict)
-                if isinstance(v, (DefineGenericBase, TypeVar)) else ValueSet({v})
-                for v in result_values
-            ).execute_annotation()
-    return result
+    return ValueSet.from_sets(
+        v.define_generics(type_var_dict)
+        if isinstance(v, (DefineGenericBase, TypeVar)) else ValueSet({v})
+        for v in result_values
+    ).execute_annotation()
 
 
 def infer_type_vars_for_callable(arguments, lazy_params):
diff --git a/test/completion/pep0484_typing.py b/test/completion/pep0484_typing.py
index 9104ca11..4ebab2e9 100644
--- a/test/completion/pep0484_typing.py
+++ b/test/completion/pep0484_typing.py
@@ -436,6 +436,12 @@ def the_callable() -> float: ...
 #? float()
 call3_pls()(the_callable)[0]
 
+def call4_pls(fn: typing.Callable[..., TYPE_VARX]) -> typing.Callable[..., TYPE_VARX]:
+    return ""
+
+#? int()
+call4_pls(lambda x: 1)()
+
 # -------------------------
 # TYPE_CHECKING
 # -------------------------