diff --git a/grandlyon_cartads_cs/models.py b/grandlyon_cartads_cs/models.py
index 27dc867..f513065 100644
--- a/grandlyon_cartads_cs/models.py
+++ b/grandlyon_cartads_cs/models.py
@@ -46,6 +46,11 @@ class GLCartaDSCS(AbstractCartaDSCS):
     class Meta:
         verbose_name = 'Cart@DS CS (@ Grand Lyon)'
 
+    def soap_client(self, **kwargs):
+        # use original BaseResource soap_client as cart@ds wsdl files cannot be
+        # served directly and have to be copied to a different server :/
+        return super(AbstractCartaDSCS, self).soap_client(**kwargs)
+
     def get_api_manager_token(self, renew=False):
         cache_key = 'cartads-%s-token' % self.id
         if not renew: