diff --git a/src/Controller/GlobalDataController.php b/src/Controller/GlobalDataController.php
index f62c9f9..8779dd6 100755
--- a/src/Controller/GlobalDataController.php
+++ b/src/Controller/GlobalDataController.php
@@ -32,7 +32,7 @@ public function pull(QueryFilter $queryFilter) : array
         // Languages
         $globalData->addLanguage(
             (new Language())->setId(new Identity('4faa508a23e3427889bfae0561d7915d'))
-                ->setLanguageISO('ger')
+                ->setLanguageIso('ger')
                 ->setIsDefault(true)
                 ->setNameGerman('Deutsch')
                 ->setNameEnglish('German')
@@ -40,7 +40,7 @@ public function pull(QueryFilter $queryFilter) : array
         
         $globalData->addLanguage(
             (new Language())->setId(new Identity('8acb0d79a1bc407e9194cc5d8359aaec'))
-                ->setLanguageISO('eng')
+                ->setLanguageIso('eng')
                 ->setIsDefault(false)
                 ->setNameGerman('Englisch')
                 ->setNameEnglish('English')
@@ -64,14 +64,14 @@ public function pull(QueryFilter $queryFilter) : array
             (new CustomerGroup())->setId(new Identity('c2c6154f05b342d4b2da85e51ec805c9'))
                 ->setIsDefault(true)
                 ->setApplyNetPrice(false)
-                ->addI18n((new CustomerGroupI18n())->setName('Endkunde'))
+                ->addI18n((new CustomerGroupI18n())->setName('Endkunde')->setLanguageIso('ger'))
         );
         
         $globalData->addCustomerGroup(
             (new CustomerGroup())->setId(new Identity('b1d7b4cbe4d846f0b323a9d840800177'))
                 ->setIsDefault(false)
                 ->setApplyNetPrice(true)
-                ->addI18n((new CustomerGroupI18n())->setName('Haendler'))
+                ->addI18n((new CustomerGroupI18n())->setName('Haendler')->setLanguageIso('ger'))
         );
         
         // TaxRates
diff --git a/tests/src/Controller/GlobalDataControllerTest.php b/tests/src/Controller/GlobalDataControllerTest.php
index 4eee264..bce2a79 100644
--- a/tests/src/Controller/GlobalDataControllerTest.php
+++ b/tests/src/Controller/GlobalDataControllerTest.php
@@ -40,13 +40,13 @@ public function testPullReturnStaticValues()
         $this->assertCount(2, $result->getLanguages());
         $this->assertEquals((new Language())
             ->setId(new Identity('4faa508a23e3427889bfae0561d7915d'))
-            ->setLanguageISO('ger')
+            ->setLanguageIso('ger')
             ->setIsDefault(true)
             ->setNameGerman('Deutsch')
             ->setNameEnglish('German'), $result->getLanguages()[0]);
         $this->assertEquals((new Language())
             ->setId(new Identity('8acb0d79a1bc407e9194cc5d8359aaec'))
-            ->setLanguageISO('eng')
+            ->setLanguageIso('eng')
             ->setIsDefault(false)
             ->setNameGerman('Englisch')
             ->setNameEnglish('English'), $result->getLanguages()[1]);
@@ -72,14 +72,14 @@ public function testPullReturnStaticValues()
             (new CustomerGroup())->setId(new Identity('c2c6154f05b342d4b2da85e51ec805c9'))
                 ->setIsDefault(true)
                 ->setApplyNetPrice(false)
-                ->addI18n((new CustomerGroupI18n())->setName('Endkunde')),
+                ->addI18n((new CustomerGroupI18n())->setName('Endkunde')->setLanguageIso('ger')),
             $result->getCustomerGroups()[0]
         );
         $this->assertEquals(
             (new CustomerGroup())->setId(new Identity('b1d7b4cbe4d846f0b323a9d840800177'))
                 ->setIsDefault(false)
                 ->setApplyNetPrice(true)
-                ->addI18n((new CustomerGroupI18n())->setName('Haendler')),
+                ->addI18n((new CustomerGroupI18n())->setName('Haendler')->setLanguageIso('ger')),
             $result->getCustomerGroups()[1]
         );