diff --git a/src/TestSuite/TestCase.php b/src/TestSuite/TestCase.php
index c8349a87222..ee4260e174e 100644
--- a/src/TestSuite/TestCase.php
+++ b/src/TestSuite/TestCase.php
@@ -324,7 +324,7 @@ public function assertTags($string, $expected, $fullDebug = false)
             'assertTags() is deprecated, use assertHtml() instead.',
             E_USER_DEPRECATED
         );
-        static::assertHtml($expected, $string, $fullDebug);
+        $this->assertHtml($expected, $string, $fullDebug);
     }
 
     /**