diff --git a/system/modules/isotope/library/Isotope/Frontend.php b/system/modules/isotope/library/Isotope/Frontend.php
index 781bafc35b..d24d252a43 100644
--- a/system/modules/isotope/library/Isotope/Frontend.php
+++ b/system/modules/isotope/library/Isotope/Frontend.php
@@ -719,7 +719,7 @@ public function addOptionsPrice($fltPrice, $objSource, $strField, $intTaxClass,
 
                     /** @var AttributeOption $objOption */
                     foreach ($objOptions as $objOption) {
-                        if (\in_array($objOption->id, $value)) {
+                        if (\in_array($objOption->getLanguageId(), $value)) {
                             $amount = $objOption->getAmount($fltPrice, 0);
                             $objTax = $objSource->getRelated('tax_class');
 
diff --git a/system/modules/isotope/library/Isotope/Model/Attribute.php b/system/modules/isotope/library/Isotope/Model/Attribute.php
index 04464867c7..35ce40057d 100644
--- a/system/modules/isotope/library/Isotope/Model/Attribute.php
+++ b/system/modules/isotope/library/Isotope/Model/Attribute.php
@@ -259,7 +259,7 @@ public function saveToDCA(array &$arrData)
                     $arrOptions = [];
                     foreach (AttributeOption::findByAttribute($this, ['order' => AttributeOption::getTable().'.label']) as $model) {
                         $arrOptions[] = [
-                            'value' => $model->id,
+                            'value' => $model->getLanguageId(),
                             'label' => $model->label,
                         ];
                     }
@@ -269,7 +269,7 @@ public function saveToDCA(array &$arrData)
                     $arrOptions = [];
                     foreach (AttributeOption::findByProducts($this, ['order' => AttributeOption::getTable().'.label']) as $model) {
                         $arrOptions[] = [
-                            'value' => $model->id,
+                            'value' => $model->getLanguageId(),
                             'label' => $model->label,
                         ];
                     }
diff --git a/system/modules/isotope/library/Isotope/Model/AttributeOption.php b/system/modules/isotope/library/Isotope/Model/AttributeOption.php
index ab33786d37..be7f73e1e9 100644
--- a/system/modules/isotope/library/Isotope/Model/AttributeOption.php
+++ b/system/modules/isotope/library/Isotope/Model/AttributeOption.php
@@ -46,6 +46,19 @@ class AttributeOption extends \MultilingualModel
      */
     protected static $strTable = 'tl_iso_attribute_option';
 
+    /**
+     * Backwards compatibility with DC_Multi
+     * @return int
+     */
+    public function getLanguageId()
+    {
+        if ($this instanceof Terminal42\DcMultilingualBundle\Model\MultilingualTrait) {
+            return parent::getLanguageId();
+        }
+
+        return $this->id;
+    }
+
     /**
      * Get array representation of the attribute option
      *
@@ -57,7 +70,7 @@ class AttributeOption extends \MultilingualModel
     public function getAsArray(IsotopeProduct $objProduct = null, $blnPriceInLabel = true)
     {
         return array(
-            'value'     => \method_exists($this, 'getLanguageId') ? $this->getLanguageId() : $this->id,
+            'value'     => $this->getLanguageId(),
             'label'     => $blnPriceInLabel ? $this->getLabel($objProduct) : $this->label,
             'group'     => 'group' === $this->type ? '1' : '',
             'default'   => $this->isDefault ? '1' : '',