diff --git a/public/GCodeViewer/viewer.js b/public/GCodeViewer/viewer.js
index ec417676d..5ed75c1ff 100644
--- a/public/GCodeViewer/viewer.js
+++ b/public/GCodeViewer/viewer.js
@@ -45,7 +45,7 @@ $(document).ready(function() {
         type: "GET",
         url: "http://" +
             $.urlParam("printerip") +
-            "machine/file/" +
+            "/machine/file/" +
             $.urlParam("filepath"),
         timeout: 0,
         xhr: function() {