diff --git a/src/preprocessors/pcTheme.js b/src/preprocessors/pcTheme.js
index 9e1d771..a06e8ae 100644
--- a/src/preprocessors/pcTheme.js
+++ b/src/preprocessors/pcTheme.js
@@ -27,7 +27,7 @@ export default (manifestPath, repo) => {
     pcManifest.theme = cssPath;
   }
 
-  const content = readFileSync(pcManifest.theme, 'utf8');
+  const content = readFileSync(pcManifest.theme, 'utf8').replace(/\\/g, '\\\\').replace(/`/g, '\\`');
 
   const jsCode = `// Generated by MS2Builder - pcTheme preprocessor / porter
 let style;