diff --git a/core/attributedef.class.inc.php b/core/attributedef.class.inc.php
index 668bd0ea3..92268e39d 100644
--- a/core/attributedef.class.inc.php
+++ b/core/attributedef.class.inc.php
@@ -11607,7 +11607,7 @@ HTML;
 			}
 			else
 			{
-				$sHtml .= '<span class="attribute-set-item">'.$oTag.'</span>';
+				$sHtml .= '<span class="attribute-set-item">'.utils::EscapeHtml($oTag).'</span>';
 			}
 		}
 		$sHtml .= '</span>';