diff --git a/lib/XMLMarshaller.js b/lib/XMLMarshaller.js
index 5486f84..80d572c 100644
--- a/lib/XMLMarshaller.js
+++ b/lib/XMLMarshaller.js
@@ -145,7 +145,8 @@ const XMLMarshaller = class {
 					this.xs.getAttributeSimpleType (node).stringify (v)
 				)
 
-			case 'extension':		
+			case 'extension':
+			case 'restriction':
 				this.appendAttributes (this.xs.getType (attributes.base), data)
 
 			default: