diff --git a/src/TestSuite/Fixture/FixtureInjector.php b/src/TestSuite/Fixture/FixtureInjector.php
index 274018ccfac..511a76af7b6 100644
--- a/src/TestSuite/Fixture/FixtureInjector.php
+++ b/src/TestSuite/Fixture/FixtureInjector.php
@@ -24,7 +24,7 @@ class_alias('PHPUnit_Framework_Warning', 'PHPUnit\Framework\Warning');
     if (!class_exists('PHPUnit\Framework\TestSuite')) {
         class_alias('PHPUnit_Framework_TestSuite', 'PHPUnit\Framework\TestSuite');
     }
-    if (class_exists('PHPUnit_Runner_Version') && !class_exists('PHPUnit\Framework\AssertionFailedError')) {
+    if (!class_exists('PHPUnit\Framework\AssertionFailedError')) {
         class_alias('PHPUnit_Framework_AssertionFailedError', 'PHPUnit\Framework\AssertionFailedError');
     }
 }