diff --git a/tests/fn.assertFunction.allOptional.phpt b/tests/fn.assertFunction.allOptional.phpt
index 8438042821bd373885f7a15e5c454c614cc502d5..baed2d8ab08ac52b6b937b9e4efe113eb04bff84 100644
--- a/tests/fn.assertFunction.allOptional.phpt
+++ b/tests/fn.assertFunction.allOptional.phpt
@@ -21,7 +21,7 @@ Assert::exception(function () use ($fn) {
 	assertFunction($fn, parameters(optional(T1::class), optional(T2::class)), T3::class);
 }, \AssertionError::class /* todo: assert message */);
 
-// Wrong type return type
+// Wrong return type type
 Assert::exception(function () use ($fn) {
 	assertFunction($fn, parameters(optional(T1::class), optional(T2::class)), optional(T2::class));
 }, \AssertionError::class /* todo: assert message */);