diff --git a/pykolab/auth/ldap/__init__.py b/pykolab/auth/ldap/__init__.py
--- a/pykolab/auth/ldap/__init__.py
+++ b/pykolab/auth/ldap/__init__.py
@@ -2896,7 +2896,7 @@
         page_size = 500
         _results = []
 
-        server_page_control = ldap.controls.libldap.SimplePagedResultsControl(size=page_size)
+        server_page_control = ldap.controls.libldap.SimplePagedResultsControl(size=page_size,cookie='')
 
         _search = self.ldap.search_ext(
             base_dn,