diff --git a/tests/e2e/Services/Functions/FunctionsCustomServerTest.php b/tests/e2e/Services/Functions/FunctionsCustomServerTest.php
index a01ab903de..01bf841499 100644
--- a/tests/e2e/Services/Functions/FunctionsCustomServerTest.php
+++ b/tests/e2e/Services/Functions/FunctionsCustomServerTest.php
@@ -926,7 +926,7 @@ class FunctionsCustomServerTest extends Scope
         ]);
 
         $this->assertEquals(400, $response3['headers']['status-code']);
-        $this->assertStringStartsWith('Invalid `specification` param: String must be a valid specification value of', $response3['body']['message']);
+        $this->assertStringStartsWith('Invalid `specification` param: Specification must be one of:', $response3['body']['message']);
 
         return $data;
     }