diff --git a/core/modules/simpletest/src/WebTestBase.php b/core/modules/simpletest/src/WebTestBase.php
index ac2f0a0664bfe827be4f25a7499f5fd0d5f18e42..956080a4021666938d765f9fc453dd2c4c3de368 100644
--- a/core/modules/simpletest/src/WebTestBase.php
+++ b/core/modules/simpletest/src/WebTestBase.php
@@ -2253,7 +2253,7 @@ protected function clickLink($label, $index = 0) {
       $this->pass(String::format('Clicked link %label (@url_target) from @url_before', array('%label' => $label, '@url_target' => $url_target, '@url_before' => $url_before)), 'Browser');
       return $this->drupalGet($url_target);
     }
-    $this->fail(String::format('Link $label does not exist on @url_before', array('%label' => $label, '@url_before' => $url_before)), 'Browser');
+    $this->fail(String::format('Link %label does not exist on @url_before', array('%label' => $label, '@url_before' => $url_before)), 'Browser');
     return FALSE;
   }