diff --git a/apps/location/models.py b/apps/location/models.py
index ebf66e04..7e6659a6 100644
--- a/apps/location/models.py
+++ b/apps/location/models.py
@@ -26,7 +26,7 @@ class Country(ProjectBaseMixin):
         verbose_name = _('Country')
 
     def __str__(self):
-        return self.code or self.id
+        return self.code or str(self.id)
 
 
 class Region(models.Model):