diff --git a/src/TextUI/Command.php b/src/TextUI/Command.php
index 967f2196095..29481384aa9 100644
--- a/src/TextUI/Command.php
+++ b/src/TextUI/Command.php
@@ -781,7 +781,8 @@ protected function handleArguments(array $argv): void
 
         if (isset($this->options[1][0]) &&
             \substr($this->options[1][0], -5, 5) !== '.phpt' &&
-            \substr($this->options[1][0], -4, 4) !== '.php'
+            \substr($this->options[1][0], -4, 4) !== '.php' &&
+            \substr($this->options[1][0], -1, 1) !== '/'
         ) {
             print 'Warning: Calling PHPUnit with a class name is deprecated and will be removed in PHPUnit 9.' . \PHP_EOL;
         }
diff --git a/tests/end-to-end/abstract-test-class.phpt b/tests/end-to-end/abstract-test-class.phpt
index 4d65da591f3..c724b8f7836 100644
--- a/tests/end-to-end/abstract-test-class.phpt
+++ b/tests/end-to-end/abstract-test-class.phpt
@@ -3,11 +3,13 @@ phpunit ../../_files/AbstractTest.php
 --FILE--
 <?php declare(strict_types=1);
 $_SERVER['argv'][1] = '--no-configuration';
-$_SERVER['argv'][2] = __DIR__ . '/../_files/AbstractTest.php';
+$_SERVER['argv'][2] = 'AbstractTest';
+$_SERVER['argv'][3] = __DIR__ . '/../_files/AbstractTest.php';
 
 require __DIR__ . '/../bootstrap.php';
 PHPUnit\TextUI\Command::main();
 --EXPECTF--
+Warning: Calling PHPUnit with a class name is deprecated and will be removed in PHPUnit 9.
 PHPUnit %s by Sebastian Bergmann and contributors.
 
 W                                                                   1 / 1 (100%)
diff --git a/tests/end-to-end/regression/GitHub/3904.phpt b/tests/end-to-end/regression/GitHub/3904.phpt
index edd1d66e8a8..6d413fdb74e 100644
--- a/tests/end-to-end/regression/GitHub/3904.phpt
+++ b/tests/end-to-end/regression/GitHub/3904.phpt
@@ -10,6 +10,7 @@ require __DIR__ . '/../../../bootstrap.php';
 
 PHPUnit\TextUI\Command::main();
 --EXPECTF--
+Warning: Calling PHPUnit with a class name is deprecated and will be removed in PHPUnit 9.
 PHPUnit %s by Sebastian Bergmann and contributors.
 
 .                                                                   1 / 1 (100%)
diff --git a/tests/end-to-end/regression/GitHub/3904_2.phpt b/tests/end-to-end/regression/GitHub/3904_2.phpt
index 0a1452d3559..8a29985f85c 100644
--- a/tests/end-to-end/regression/GitHub/3904_2.phpt
+++ b/tests/end-to-end/regression/GitHub/3904_2.phpt
@@ -15,4 +15,5 @@ try {
 }
 ?>
 --EXPECTF--
+Warning: Calling PHPUnit with a class name is deprecated and will be removed in PHPUnit 9.
 Class 'Issue3904' could not be found in '%s'.