diff --git a/js/usercss.js b/js/usercss.js
index 5f67f815..eb1a31dd 100644
--- a/js/usercss.js
+++ b/js/usercss.js
@@ -414,6 +414,8 @@ var usercss = (function () {
   }
 
   function _buildMeta(sourceCode) {
+    sourceCode = sourceCode.replace(/\r\n?/g, '\n');
+
     const usercssData = {
       vars: {}
     };