diff --git a/Legacy/PolyfillAssertTrait.php b/Legacy/PolyfillAssertTrait.php
index 6b4941d5..1f05bbe5 100644
--- a/Legacy/PolyfillAssertTrait.php
+++ b/Legacy/PolyfillAssertTrait.php
@@ -554,6 +554,6 @@ public static function assertMatchesRegularExpression($pattern, $string, $messag
      */
     public static function assertDoesNotMatchRegularExpression($pattern, $string, $message = '')
     {
-        static::assertNotRegExp($message, $string, $message);
+        static::assertNotRegExp($pattern, $string, $message);
     }
 }