diff --git a/README.md b/README.md
index c34c045..937352a 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,8 @@ ___
 ___
 
 #### Complie:
+Have `yarn` and `golang` installed first.
+
 ```
 ./Tools.sh build
 ```
diff --git a/client/src/Popup.js b/client/src/Popup.js
index e10a6a9..9d668c4 100644
--- a/client/src/Popup.js
+++ b/client/src/Popup.js
@@ -46,7 +46,7 @@ class MyVideoPlayer extends React.Component {
 
 class ResponsiveDialog extends React.Component {
     get_target_url = () => {
-        var root_folder = this.props.parentState.info['root_folder'] + "/"
+        var root_folder = this.props.parentState.info['root_folder']
         var path = this.props.parentState.selected_file_path
         var target_url = MEDIA_BASE + path.replace(root_folder, "")
         return target_url