diff --git a/zundler/assets/inject_pre.js b/zundler/assets/inject_pre.js
index 8cb4779..77ceb12 100644
--- a/zundler/assets/inject_pre.js
+++ b/zundler/assets/inject_pre.js
@@ -118,7 +118,7 @@ action: "retrieveFile",
 
 var embedImgFromParent = function(img) {
     function setSrc(img, file) {
-        if (mime_type == 'image/svg+xml') {
+        if (file.mime_type == 'image/svg+xml') {
             img.setAttribute('src', "data:image/svg+xml;charset=utf-8;base64, " + btoa(file.data));
         } else {
             img.setAttribute('src', `data:${file.mime_type};base64, ${file.data}`);
diff --git a/zundler/assets/zundler_common.js b/zundler/assets/zundler_common.js
index 671d2c7..c33f90e 100644
--- a/zundler/assets/zundler_common.js
+++ b/zundler/assets/zundler_common.js
@@ -63,6 +63,10 @@ var normalizePath = function(path) {
     var result = window.globalContext.current_path;
     result = result.split('/');
     result.pop();
+    // path can be a request object
+    if (!(typeof path === 'string' || path instanceof String)) {
+        path = path.href;
+    };
     result = result.concat(path.split('/'));
 
     // resolve relative directories