diff --git a/mylib/ldap.py b/mylib/ldap.py
index 3f09020..b7ed66a 100644
--- a/mylib/ldap.py
+++ b/mylib/ldap.py
@@ -448,6 +448,11 @@ class LdapClient:
                            returned instead of the first value only
                            (optinal, default: False)
         """
+        if attr not in obj:
+            for k in obj:
+                if k.lower() == attr.lower():
+                    attr = k
+                    break
         vals = obj.get(attr, [])
         if vals:
             return vals if all_values else vals[0]