diff -u b/core/includes/install.core.inc b/core/includes/install.core.inc
--- b/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -1919,7 +1919,7 @@
         'title'       => t('Translation'),
         'value'       => t('The %language translation is not available.', array('%language' => $language)),
         'severity'    => REQUIREMENT_ERROR,
-        'description' => t('The %language translation file is not available at the translation server. <a href=":url">Choose a different language</a> or select English and translate your website later.', array('%language' => $language, ':url' => UrlHelper::stripDangerousProtocols($_SERVER['SCRIPT_NAME']))),
+        'description' => t('The %language translation file is not available at the translation server. <a href=":url">Choose a different language</a> or select English and translate your website later.', array('%language' => $language, ':url' => $_SERVER['SCRIPT_NAME'])),
       );
     }
     else {
@@ -1938,7 +1938,7 @@
         'title'       => t('Translation'),
         'value'       => t('The %language translation could not be downloaded.', array('%language' => $language)),
         'severity'    => REQUIREMENT_ERROR,
-        'description' => t('The %language translation file could not be downloaded. <a href=":url">Choose a different language</a> or select English and translate your website later.', array('%language' => $language, ':url' => UrlHelper::stripDangerousProtocols($_SERVER['SCRIPT_NAME']))),
+        'description' => t('The %language translation file could not be downloaded. <a href=":url">Choose a different language</a> or select English and translate your website later.', array('%language' => $language, ':url' => $_SERVER['SCRIPT_NAME'])),
       );
     }
   }
@@ -2148,11 +2148,11 @@
       $build['report']['#requirements'] = $requirements;
       if ($severity == REQUIREMENT_WARNING) {
         $build['#title'] = t('Requirements review');
-        $build['#suffix'] = t('Check the messages and <a href=":retry">retry</a>, or you may choose to <a href=":cont">continue anyway</a>.', array(':retry' => UrlHelper::stripDangerousProtocols(drupal_requirements_url(REQUIREMENT_ERROR)), ':cont' => UrlHelper::stripDangerousProtocols(drupal_requirements_url($severity))));
+        $build['#suffix'] = t('Check the messages and <a href=":retry">retry</a>, or you may choose to <a href=":cont">continue anyway</a>.', array(':retry' => drupal_requirements_url(REQUIREMENT_ERROR), ':cont' => drupal_requirements_url($severity)));
       }
       else {
         $build['#title'] = t('Requirements problem');
-        $build['#suffix'] = t('Check the messages and <a href=":url">try again</a>.', array(':url' => UrlHelper::stripDangerousProtocols(drupal_requirements_url($severity))));
+        $build['#suffix'] = t('Check the messages and <a href=":url">try again</a>.', array(':url' => drupal_requirements_url($severity)));
       }
       return $build;
     }