diff --git a/examples/js/exporters/GLTFExporter.js b/examples/js/exporters/GLTFExporter.js
index f52e94cbf50ee11bbd23071ffe86f5ce3c53c89f..ebfaf11133870c944580d649d056ac4fe66f503b 100644
--- a/examples/js/exporters/GLTFExporter.js
+++ b/examples/js/exporters/GLTFExporter.js
@@ -342,6 +342,8 @@ THREE.GLTFExporter.prototype = {
 				console.warn( 'THREE.GLTFExporter: userData of \'' + object.name + '\' ' +
 					'won\'t be serialized because of JSON.stringify error - ' + error.message );
 
+				return {};
+
 			}
 
 		}