diff --git a/lib/ansible/modules/net_tools/ldap/ldap_attr.py b/lib/ansible/modules/net_tools/ldap/ldap_attr.py
index f06ec24b1d..f1640812b6 100644
--- a/lib/ansible/modules/net_tools/ldap/ldap_attr.py
+++ b/lib/ansible/modules/net_tools/ldap/ldap_attr.py
@@ -173,7 +173,7 @@ class LdapAttr(LdapGeneric):
 
         # Normalize values
         if isinstance(self.module.params['values'], list):
-            self.values = map(to_bytes, self.module.params['values'])
+            self.values = list(map(to_bytes, self.module.params['values']))
         else:
             self.values = [to_bytes(self.module.params['values'])]