diff --git a/inc/config.class.php b/inc/config.class.php
index d70d938..3bbea2e 100644
--- a/inc/config.class.php
+++ b/inc/config.class.php
@@ -281,7 +281,7 @@ function seeTreeview() {
          echo "if (top != self)";
          echo "top.location = self.location;";
       echo "</script></head>";
-      echo "<frameset cols='250,*' border='0'>";
+      echo "<frameset cols='250,*'>";
          echo "<frame src='".Plugin::getWebDir('treeview')."/left.php' name='left' scrolling='yes'>";
          echo "<frame src='".$CFG_GLPI['root_doc']."/front/central.php' name='right'>";
          echo "<noframes>";