diff --git a/example/three/sandbox/index.html b/example/three/sandbox/index.html
index 174460b..44d5e4d 100644
--- a/example/three/sandbox/index.html
+++ b/example/three/sandbox/index.html
@@ -101,7 +101,7 @@
           camera:cameraRig,
           scene,
           renderer,
-          loaders: { gltf: GLTFLoader, fbx: GLTFLoader, fbx: FBXLoader }, // which 3D assets (extensions) to check for XR fragments?
+          loaders: { gltf: GLTFLoader, glb: GLTFLoader, fbx: FBXLoader }, // which 3D assets (extensions) to check for XR fragments?
         })