1 files changed, 6 insertions, 3 deletions
diff --git a/src/Defs.js b/src/Defs.js
index 21b6703..e8c5ac2 100644
--- a/src/Defs.js
+++ b/src/Defs.js
@@ -1,8 +1,11 @@
-import Container from './Container.js'
+import Base from './Base.js'
 import {nodeOrNew} from './tools.js'
 
-export default class Defs extends Container {
+export default class Defs extends Base {
   constructor (node) {
-    super(nodeOrNew('defs', node))
+    super(nodeOrNew('defs', node), Defs)
   }
+
+  flatten () { return this }
+  ungroup () { return this }
 }