diff --git a/examples/js/loaders/MTLLoader.js b/examples/js/loaders/MTLLoader.js
index 475894ef1ecea817e88ac7bec9f039d87ce104ff..150a391955bd9cc6cee2cde8cf16b307519bf578 100644
--- a/examples/js/loaders/MTLLoader.js
+++ b/examples/js/loaders/MTLLoader.js
@@ -340,6 +340,17 @@ THREE.MTLLoader.MaterialCreator.prototype = {
 
 					break;
 
+				case 'map_bump':
+				case 'bump':
+
+					// Bump texture map
+
+					params[ 'bumpMap' ] = this.loadTexture( this.baseUrl + value );
+					params[ 'bumpMap' ].wrapS = this.wrap;
+					params[ 'bumpMap' ].wrapT = this.wrap;
+
+					break;
+
 				default:
 					break;