diff --git a/libraries/plugins/auth/AuthenticationCookie.class.php b/libraries/plugins/auth/AuthenticationCookie.class.php
index 1efad9ca9a..69b8a7b207 100644
--- a/libraries/plugins/auth/AuthenticationCookie.class.php
+++ b/libraries/plugins/auth/AuthenticationCookie.class.php
@@ -266,8 +266,7 @@ class AuthenticationCookie extends AuthenticationPlugin
                  </script>
                  <script type="text/javascript"
                     src="https://www.google.com/recaptcha/api/challenge?'
-                    . 'k=' . $GLOBALS['cfg']['CaptchaLoginPublicKey']
-                    . PMA_URL_getArgSeparator('html')
+                    . 'k=' . $GLOBALS['cfg']['CaptchaLoginPublicKey'] . '&amp;'
                     . 'hl=' . $GLOBALS['lang'] . '">
                  </script>
                  <noscript>