diff --git a/ubersmith/calls/client.py b/ubersmith/calls/client.py
index <HASH>..<HASH> 100644
--- a/ubersmith/calls/client.py
+++ b/ubersmith/calls/client.py
@@ -66,7 +66,7 @@ class InvoiceCountCall(BaseCall):
         self.cleaned = int(self.cleaned)
 
 
-class CreditListCall(BaseCall):
+class CreditListCall(GroupCall):
     method = _('credit_list')
     required_fields = ['client_id']
Changed client.credit_list call to group call