diff --git a/heatcalc/index.html b/heatcalc/index.html
index c21b140..919a27b 100644
--- a/heatcalc/index.html
+++ b/heatcalc/index.html
@@ -2,7 +2,7 @@
 <link rel="stylesheet" href="heatcalc.css">
 <script>
   require(['heatcalc'], function (hc) {
-      hc.init("<?php echo $block->getFileUrl('data.json');?>");
+      hc.init('data.json');
   });
 </script>
 <link rel="stylesheet" type="text/css" media="screen" href="<?php echo $block->getFileUrl('heatcalc.css');?>" />