diff --git a/browser/components/MarkdownPreview.js b/browser/components/MarkdownPreview.js
index c5465eff..11d8dca6 100755
--- a/browser/components/MarkdownPreview.js
+++ b/browser/components/MarkdownPreview.js
@@ -679,7 +679,7 @@ export default class MarkdownPreview extends React.Component {
     const theme = consts.THEMES.find(theme => theme.name === name)
 
     return theme
-      ? (win ? theme.path : `../${theme.path}`)
+      ? (win ? theme.path : `${appPath}/${theme.path}`)
       : `${appPath}/node_modules/codemirror/theme/elegant.css`
   }