diff --git a/app/services/ldap_manager/update_display_name.rb b/app/services/ldap_manager/update_display_name.rb
index 85418d3..30ca606 100644
--- a/app/services/ldap_manager/update_display_name.rb
+++ b/app/services/ldap_manager/update_display_name.rb
@@ -6,7 +6,11 @@ module LdapManager
     end
 
     def call
-      replace_attribute @dn, :displayName, @display_name
+      if @display_name.present?
+        replace_attribute @dn, :displayName, @display_name
+      else
+        delete_attribute @dn, :displayName
+      end
     end
   end
 end