diff --git a/libraries/common.lib.php b/libraries/common.lib.php
index 8e357860a..d1648a49c 100644
--- a/libraries/common.lib.php
+++ b/libraries/common.lib.php
@@ -491,7 +491,7 @@ function PMA_showHint($message, $bbcode = false, $type = 'notice')
     // footnotemarker used in js/tooltip.js
     return '<sup class="footnotemarker">' . $nr . '</sup>' .
     '<img class="footnotemarker" id="footnote_' . $nr . '_' . $instance . '" src="' .
-    $GLOBALS['pmaThemeImage'] . 'b_help.png" alt="tooltip" />';
+    $GLOBALS['pmaThemeImage'] . 'b_help.png" alt="" />';
 }
 
 /**