diff --git a/tests/FileManipulation/ReturnTypeManipulationTest.php b/tests/FileManipulation/ReturnTypeManipulationTest.php
index aeb430117a8..d4221eb1c41 100644
--- a/tests/FileManipulation/ReturnTypeManipulationTest.php
+++ b/tests/FileManipulation/ReturnTypeManipulationTest.php
@@ -412,7 +412,7 @@ protected function foo() {}
                     }',
                 'php_version' => '7.3',
                 'issues_to_fix' => ['InvalidReturnType'],
-                'safe_types' => false,
+                'safe_types' => true,
             ],
             'fixInvalidIntReturnTypeJustInPhpDocWhenDisallowingBackwardsIncompatibleChanges' => [
                 'input' => '<?php