diff --git a/tests/unit/Framework/MockObject/ReturnValueGeneratorTest.php b/tests/unit/Framework/MockObject/ReturnValueGeneratorTest.php
index 5a882a85e8e..175c360fd44 100644
--- a/tests/unit/Framework/MockObject/ReturnValueGeneratorTest.php
+++ b/tests/unit/Framework/MockObject/ReturnValueGeneratorTest.php
@@ -45,7 +45,7 @@ public static function unionProvider(): array
         ];
     }
 
-    public function test_Generates_null_for_empty_string(): void
+    public function test_Generates_null_for_missing_return_type_declaration(): void
     {
         $this->assertNull($this->generate(''));
     }