diff --git a/js/noir.ts b/js/noir.ts
index 1ca17fa..da93b4f 100644
--- a/js/noir.ts
+++ b/js/noir.ts
@@ -31,18 +31,15 @@ export function createElement(type, inputProps, ...children) {
 }
 
 export function createRoot(containerNode) {
-  return {
-    render: function (element) {
-      if (!this.rootFiber) this.rootFiber = makeRootFiber(this, containerNode);
-
-      this.rootFiber.props = { children: [element] };
-      startRenderLoop(this.rootFiber);
-    },
+  const render = (element) => {
+    if (!this.rootFiber) {
+      this.rootFiber = makeFiber(this, RootFiber);
+      this.rootFiber.dom = containerNode;
+    }
+
+    this.rootFiber.props = { children: [element] };
+    startRenderLoop(this.rootFiber);
   };
-}
 
-function makeRootFiber(root, containerNode) {
-  const rootFiber = makeFiber(root, RootFiber);
-  rootFiber.dom = containerNode;
-  return rootFiber;
+  return {render};
 }