diff --git a/classes/Category.php b/classes/Category.php
index 35cbdb0f4..a5fea0fbd 100644
--- a/classes/Category.php
+++ b/classes/Category.php
@@ -1390,8 +1390,7 @@ class CategoryCore extends ObjectModel
 		SELECT DISTINCT c.*
 		FROM `'._DB_PREFIX_.'category` c
 		LEFT JOIN `'._DB_PREFIX_.'category_lang` cl ON (c.`id_category` = cl.`id_category` AND cl.`id_lang` = '.(int)Context::getContext()->language->id.')
-		WHERE `level_depth` = 1
-		');
+		WHERE `level_depth` = 1');
 	}
 
 	public function isRootCategoryForAShop()
diff --git a/classes/helper/HelperList.php b/classes/helper/HelperList.php
index bfc0077dd..8cbab8b4c 100644
--- a/classes/helper/HelperList.php
+++ b/classes/helper/HelperList.php
@@ -173,13 +173,13 @@ class HelperListCore extends Helper
 
 	public function displayListContent()
 	{
-		if ($this->position_identifier)
-			$id_category = (int)Tools::getValue('id_'.($this->is_cms ? 'cms_' : '').'category', ($this->is_cms ? '1' : Category::getRootCategory()->id ));
-		else
-			$id_category = Category::getRootCategory()->id;
-
 		if (isset($this->fields_list['position']))
 		{
+			if ($this->position_identifier)
+				$id_category = (int)Tools::getValue('id_'.($this->is_cms ? 'cms_' : '').'category', ($this->is_cms ? '1' : Category::getRootCategory()->id ));
+			else
+				$id_category = Category::getRootCategory()->id;
+
 			$positions = array_map(create_function('$elem', 'return (int)($elem[\'position\']);'), $this->_list);
 			sort($positions);
 		}
@@ -307,7 +307,7 @@ class HelperListCore extends Helper
 			'table' => $this->table,
 			'token' => $this->token,
 			'color_on_bg' => $this->colorOnBackground,
-			'id_category' => $id_category,
+			'id_category' => isset($id_category) ? $id_category : false,
 			'bulk_actions' => $this->bulk_actions,
 			'positions' => isset($positions) ? $positions : null,
 			'order_by' => $this->orderBy,