diff --git a/htdocs/variants/class/ProductCombination.class.php b/htdocs/variants/class/ProductCombination.class.php
index e9e71b41c4a..cdf8e470a00 100644
--- a/htdocs/variants/class/ProductCombination.class.php
+++ b/htdocs/variants/class/ProductCombination.class.php
@@ -233,72 +233,72 @@ class ProductCombination
 		}
 	}
 
-  /**
-   * Return the product id of the parent product of a variant product (Get fk_product_parent by fk_product_child)
-   *
-   * @param int $fk_child 	Product row id
-   * @return int 				>0 if OK, 0 if product is not a variant, <0 if KO
-   */
-  public function getFkProductParentByFkProductChild($fk_child)
-  {
-      $sql = "SELECT fk_product_parent FROM ".MAIN_DB_PREFIX."product_attribute_combination";
-      $sql .= " WHERE fk_product_child = ".(int) $fk_child." AND entity IN (".getEntity('product').") LIMIT 1";
+	/**
+	 * Return the product id of the parent product of a variant product (Get fk_product_parent by fk_product_child)
+	 *
+	 * @param int $fk_child 	Product row id
+	 * @return int 				>0 if OK, 0 if product is not a variant, <0 if KO
+	 */
+	public function getFkProductParentByFkProductChild($fk_child)
+	{
+		$sql = "SELECT fk_product_parent FROM ".MAIN_DB_PREFIX."product_attribute_combination";
+		$sql .= " WHERE fk_product_child = ".(int) $fk_child." AND entity IN (".getEntity('product').") LIMIT 1";
 
-      $query = $this->db->query($sql);
+		$query = $this->db->query($sql);
 
-      if (!$query) {
-          return -1;
-      }
+		if (!$query) {
+			return -1;
+		}
 
-      if (!$this->db->num_rows($query)) {
-          return 0;
-      }
+		if (!$this->db->num_rows($query)) {
+			return 0;
+		}
 
-      $row = $this->db->fetch_object($query);
+		$row = $this->db->fetch_object($query);
 
-      return (int) $row->fk_product_parent;
-  }
+		return (int) $row->fk_product_parent;
+	}
 
-  /**
-   * Retrieves all product combinations by the child product row id
-   *
-   * @param int $fk_child Product row id
-   * @param	int $donotloadpricelevel	Avoid loading price impact for each level. If PRODUIT_MULTIPRICES is not set, this has no effect.
-   * @return int|ProductCombination[] <0 KO
-   */
-  public function fetchAllByFkProductChild($fk_child, $donotloadpricelevel = 0)
-  {
-      global $conf;
+	/**
+	 * Retrieves all product combinations by the child product row id
+	 *
+	 * @param int $fk_child Product row id
+	 * @param	int $donotloadpricelevel	Avoid loading price impact for each level. If PRODUIT_MULTIPRICES is not set, this has no effect.
+	 * @return int|ProductCombination[] <0 KO
+	 */
+	public function fetchAllByFkProductChild($fk_child, $donotloadpricelevel = 0)
+	{
+		global $conf;
 
-      $sql = "SELECT rowid, fk_product_parent, fk_product_child, variation_price, variation_price_percentage, variation_weight, variation_ref_ext FROM ".MAIN_DB_PREFIX."product_attribute_combination WHERE fk_product_child = ".(int) $fk_child." AND entity IN (".getEntity('product').")";
+		$sql = "SELECT rowid, fk_product_parent, fk_product_child, variation_price, variation_price_percentage, variation_weight, variation_ref_ext FROM ".MAIN_DB_PREFIX."product_attribute_combination WHERE fk_product_child = ".(int) $fk_child." AND entity IN (".getEntity('product').")";
 
-      $query = $this->db->query($sql);
+		$query = $this->db->query($sql);
 
-      if (!$query) {
-          return -1;
-      }
+		if (!$query) {
+			return -1;
+		}
 
-      $return = array();
+		$return = array();
 
-      while ($result = $this->db->fetch_object($query)) {
-          $tmp = new ProductCombination($this->db);
-          $tmp->id = $result->rowid;
-          $tmp->fk_product_parent = $result->fk_product_parent;
-          $tmp->fk_product_child = $result->fk_product_child;
-          $tmp->variation_price = $result->variation_price;
-          $tmp->variation_price_percentage = $result->variation_price_percentage;
-          $tmp->variation_weight = $result->variation_weight;
-          $tmp->variation_ref_ext = $result->variation_ref_ext;
+		while ($result = $this->db->fetch_object($query)) {
+			$tmp = new ProductCombination($this->db);
+			$tmp->id = $result->rowid;
+			$tmp->fk_product_parent = $result->fk_product_parent;
+			$tmp->fk_product_child = $result->fk_product_child;
+			$tmp->variation_price = $result->variation_price;
+			$tmp->variation_price_percentage = $result->variation_price_percentage;
+			$tmp->variation_weight = $result->variation_weight;
+			$tmp->variation_ref_ext = $result->variation_ref_ext;
 
-          if (empty($donotloadpricelevel) && !empty($conf->global->PRODUIT_MULTIPRICES)) {
-              $tmp->fetchCombinationPriceLevels();
-          }
+			if (empty($donotloadpricelevel) && !empty($conf->global->PRODUIT_MULTIPRICES)) {
+				$tmp->fetchCombinationPriceLevels();
+			}
 
-          $return[] = $tmp;
-      }
+			$return[] = $tmp;
+		}
 
-      return $return;
-  }
+		return $return;
+	}
 
 	/**
 	 * Retrieves all product combinations by the product parent row id