diff --git a/pym/cl_ldap.py b/pym/cl_ldap.py
index 65ea3d2..c7e0f23 100644
--- a/pym/cl_ldap.py
+++ b/pym/cl_ldap.py
@@ -213,16 +213,17 @@ class ldapUser(_error):
                     else:
                         dictOut[dictAttr] = ""
                 elif dictAttr == "groups":
-                    userGroups = []
+                    userGroupsData = []
                     for groupDN in groupsDNs:
                         searchGroup = self.ldapObj.ldapSearch(groupDN,
                                                    ldap.SCOPE_ONELEVEL,
                                                    "%s=%s" %(ldapAttr,userName),
-                                                   ["cn"])
+                                                   ["cn","gidNumber"])
                         if searchGroup:
-                            userGroups += map(lambda x: x[0][1]["cn"][0],
+                            userGroupsData += map(lambda x: (x[0][1]["cn"][0],
+                                                       x[0][1]["gidNumber"][0]),
                                               searchGroup)
-                    dictOut[dictAttr] = userGroups
+                    dictOut[dictAttr] = userGroupsData
         if uid and gid:
             return dictOut
         else: