diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/PolyfillAssertTrait.php b/src/Symfony/Bridge/PhpUnit/Legacy/PolyfillAssertTrait.php
index 69a01d2927..646ea6b264 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/PolyfillAssertTrait.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/PolyfillAssertTrait.php
@@ -13,6 +13,7 @@ namespace Symfony\Bridge\PhpUnit\Legacy;
 
 use PHPUnit\Framework\Constraint\IsEqual;
 use PHPUnit\Framework\Constraint\LogicalNot;
+use PHPUnit\Framework\Constraint\RegularExpression;
 use PHPUnit\Framework\Constraint\StringContains;
 use PHPUnit\Framework\Constraint\TraversableContains;
 
@@ -443,4 +444,24 @@ trait PolyfillAssertTrait
         static::assertFileExists($filename, $message);
         static::assertNotIsWritable($filename, $message);
     }
+
+    /**
+     * Asserts that a string matches a given regular expression.
+     *
+     * @param string $pattern
+     * @param string $string
+     * @param string $message
+     *
+     * @return void
+     */
+    public function assertMatchesRegularExpression($pattern, $string, $message = '')
+    {
+        static::assertThat(
+            $string,
+            new LogicalNot(
+                new RegularExpression($pattern)
+            ),
+            $message
+        );
+    }
 }
diff --git a/src/Symfony/Bridge/PhpUnit/Legacy/PolyfillTestCaseTrait.php b/src/Symfony/Bridge/PhpUnit/Legacy/PolyfillTestCaseTrait.php
index ffd3375e68..cb3fbf4490 100644
--- a/src/Symfony/Bridge/PhpUnit/Legacy/PolyfillTestCaseTrait.php
+++ b/src/Symfony/Bridge/PhpUnit/Legacy/PolyfillTestCaseTrait.php
@@ -11,10 +11,8 @@
 
 namespace Symfony\Bridge\PhpUnit\Legacy;
 
-use PHPUnit\Framework\ExpectationFailedException;
 use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\TestCase;
-use SebastianBergmann\RecursionContext\InvalidArgumentException;
 
 /**
  * This trait is @internal.
@@ -118,18 +116,4 @@ trait PolyfillTestCaseTrait
         $property->setAccessible(true);
         $property->setValue($this, $messageRegExp);
     }
-
-    /**
-     * Asserts that a string matches a given regular expression.
-     *
-     * @param string $pattern
-     * @param string $string
-     * @param string $message
-     *
-     * @return void
-     */
-    public function assertMatchesRegularExpression($pattern, $string, $message = '')
-    {
-        $this->assertRegExp($pattern, $string, $message);
-    }
 }