diff --git a/examples/js/loaders/GLTFLoader.js b/examples/js/loaders/GLTFLoader.js
index 45ad1f0f9b426afeedadbbcb97e445808ec28c0b..e43033c54682495c6b32def0a42c11ab3d1d6eb1 100644
--- a/examples/js/loaders/GLTFLoader.js
+++ b/examples/js/loaders/GLTFLoader.js
@@ -2236,8 +2236,8 @@ THREE.GLTFLoader = ( function () {
 
 				case 'aoMap':
 				case 'emissiveMap':
-				case 'roughnessMap':
 				case 'metalnessMap':
+				case 'roughnessMap':
 					texture.format = THREE.RGBFormat;
 					break;