diff --git a/mapview/js/mapviewgl.js b/mapview/js/mapviewgl.js
index 9dd1dea..6dff772 100644
--- a/mapview/js/mapviewgl.js
+++ b/mapview/js/mapviewgl.js
@@ -1,5 +1,5 @@
 if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
-require(./empiredata.js)
+require( "./empiredata.js" )
 var camera, controls, scene, renderer;
 var canvas_t=[];
 var context_t=[];