diff --git a/controllers/BaseController.php b/controllers/BaseController.php
index ae8ebb8f..87ac9af0 100644
--- a/controllers/BaseController.php
+++ b/controllers/BaseController.php
@@ -70,6 +70,11 @@ class BaseController
 
 	protected function getLocalizationService()
 	{
+		if (!defined('GROCY_LOCALE'))
+		{
+			define('GROCY_LOCALE', GROCY_DEFAULT_LOCALE);
+		}
+
 		return LocalizationService::getInstance(GROCY_LOCALE);
 	}
 
diff --git a/services/BaseService.php b/services/BaseService.php
index 71e99ac2..86a4a5d4 100644
--- a/services/BaseService.php
+++ b/services/BaseService.php
@@ -44,6 +44,11 @@ class BaseService
 
 	protected function getLocalizationService()
 	{
+		if (!defined('GROCY_LOCALE'))
+		{
+			define('GROCY_LOCALE', GROCY_DEFAULT_LOCALE);
+		}
+
 		return LocalizationService::getInstance(GROCY_LOCALE);
 	}