diff --git a/src/Resources/contao/dca/tl_isotope_stock_account.php b/src/Resources/contao/dca/tl_isotope_stock_account.php
index afabe42..561b472 100644
--- a/src/Resources/contao/dca/tl_isotope_stock_account.php
+++ b/src/Resources/contao/dca/tl_isotope_stock_account.php
@@ -16,6 +16,7 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
+\Contao\System::loadLanguageFile('tl_isotope_stock_account');
 
 $GLOBALS['TL_DCA']['tl_isotope_stock_account'] = array
 (
diff --git a/src/Resources/contao/dca/tl_isotope_stock_booking.php b/src/Resources/contao/dca/tl_isotope_stock_booking.php
index cefb21f..cf7bfdc 100644
--- a/src/Resources/contao/dca/tl_isotope_stock_booking.php
+++ b/src/Resources/contao/dca/tl_isotope_stock_booking.php
@@ -25,6 +25,7 @@
 \Contao\Controller::loadDataContainer(\Isotope\Model\Product::getTable());
 \Contao\System::loadLanguageFile(\Isotope\Model\ProductCollection::getTable());
 \Contao\Controller::loadDataContainer(\Isotope\Model\ProductCollection::getTable());
+\Contao\System::loadLanguageFile('tl_isotope_stock_booking');
 
 $GLOBALS['TL_DCA']['tl_isotope_stock_booking'] = array
 (
diff --git a/src/Resources/contao/dca/tl_isotope_stock_booking_line.php b/src/Resources/contao/dca/tl_isotope_stock_booking_line.php
index cd183b8..a058ffc 100644
--- a/src/Resources/contao/dca/tl_isotope_stock_booking_line.php
+++ b/src/Resources/contao/dca/tl_isotope_stock_booking_line.php
@@ -26,6 +26,8 @@
 use Krabo\IsotopeStockBundle\Model\AccountModel;
 use Krabo\IsotopeStockBundle\Model\BookingModel;
 
+\Contao\System::loadLanguageFile('tl_isotope_stock_booking_line');
+
 $GLOBALS['TL_DCA']['tl_isotope_stock_booking_line'] = array
 (
   // Config
diff --git a/src/Resources/contao/dca/tl_isotope_stock_period.php b/src/Resources/contao/dca/tl_isotope_stock_period.php
index 376e32e..e785541 100644
--- a/src/Resources/contao/dca/tl_isotope_stock_period.php
+++ b/src/Resources/contao/dca/tl_isotope_stock_period.php
@@ -17,6 +17,8 @@
  */
 
 
+\Contao\System::loadLanguageFile('tl_isotope_stock_period');
+
 $GLOBALS['TL_DCA']['tl_isotope_stock_period'] = array
 (
   // Config