diff --git a/modules/document/tpl/category_list.html b/modules/document/tpl/category_list.html
index 5f4e40e5d..4eaa895a5 100644
--- a/modules/document/tpl/category_list.html
+++ b/modules/document/tpl/category_list.html
@@ -72,7 +72,7 @@
 					<span class="x_help-block">{$lang->about_category_description}</span>
 				</div>
 			</div>
-			<div class="x_control-group">
+			<div class="x_control-group category_groups">
 				<label class="x_control-label">{$lang->category_group_srls}</label>
 				<div class="x_controls">
 					<label loop="$group_list => $key, $val" class="x_inline" for="group_{$key}"><input type="checkbox" name="group_srls[]" value="{$key}" id="group_{$key}" /> {$val->title}</label>