diff --git a/src/Ldap/Client/Instances.hs b/src/Ldap/Client/Instances.hs
index 080c84f75..9f2580333 100644
--- a/src/Ldap/Client/Instances.hs
+++ b/src/Ldap/Client/Instances.hs
@@ -53,4 +53,5 @@ derivePersistField "Dn"
 derivePersistField "Password"
 derivePersistField "Scope"
 
-deriveFromJSON defaultOptions ''Scope
+deriveJSON defaultOptions ''Attr
+deriveJSON defaultOptions ''Scope