diff --git a/python/seaserv/api.py b/python/seaserv/api.py
index ef41d65..f54e5df 100644
--- a/python/seaserv/api.py
+++ b/python/seaserv/api.py
@@ -947,11 +947,12 @@ class CcnetAPI(object):
         """
         return ccnet_threaded_rpc.get_superusers()
 
-    def get_emailusers_in_list(self, user_list):
+    def get_emailusers_in_list(self, source, user_list):
         """
+        @source: 'DB' or 'LDAP'
         @user_list: json '[user1, user2, user3,...]'
         """
-        return ccnet_threaded_rpc.get_emailusers_in_list(user_list)
+        return ccnet_threaded_rpc.get_emailusers_in_list(source, user_list)
 
     # group management
     def create_group(self, group_name, user_name, gtype=None, parent_group_id=0):