diff --git a/core/phpstan-baseline.neon b/core/phpstan-baseline.neon
index ae650f5ebf37b77bcc708720f0be05fdfe14e5f4..213fab692c87ae8646b67eb903b81b3ad7383102 100644
--- a/core/phpstan-baseline.neon
+++ b/core/phpstan-baseline.neon
@@ -180,11 +180,6 @@ parameters:
 			count: 1
 			path: lib/Drupal/Core/Template/TwigPhpStorageCache.php
 
-		-
-			message: "#^Class Drupal\\\\simpletest\\\\TestBase not found\\.$#"
-			count: 1
-			path: lib/Drupal/Core/Test/RunTests/TestFileParser.php
-
 		-
 			message: "#^Call to deprecated constant REQUEST_TIME\\: Deprecated in drupal\\:8\\.3\\.0 and is removed from drupal\\:10\\.0\\.0\\. Use \\\\Drupal\\:\\:time\\(\\)\\-\\>getRequestTime\\(\\); $#"
 			count: 2