diff --git a/include/class_baseSelector.inc b/include/class_baseSelector.inc
index 344776ee7a3db0922f0894ea8e1d23be26f1cd0f..5050b7ca0c6c4140182e526327c48fede84d2dfe 100644
--- a/include/class_baseSelector.inc
+++ b/include/class_baseSelector.inc
@@ -235,7 +235,7 @@ class baseSelector
       }
       $selected   = ($this->base == $base ? ' class="treeListSelected"' : '');
       $link       = "onclick=\"\$('bs_rebase_".$this->pid."').value='".base64_encode($base)."';$('submit_tree_base_".$this->pid."').click();\"";
-      $this->tree .= "<li><a$selected $link>".
+      $this->tree .= '<li><a'.$selected.' '.$link.' title="'.$base.'">'.
                     '<img class="center" '.
                     'src="'.htmlentities($config->department_info[$base]['img'], ENT_COMPAT, 'UTF-8').'" '.
                     'alt="'.htmlentities($config->department_info[$base]['name'], ENT_COMPAT, 'UTF-8').'"/>&nbsp;'.