diff --git a/src/routes/meta.js b/src/routes/meta.js
index b3d5151b04..50b04dc235 100644
--- a/src/routes/meta.js
+++ b/src/routes/meta.js
@@ -38,7 +38,7 @@ function setupPluginSourceMapping(app) {
 		prefix = __dirname.split(path.sep).length - 1;
 
 	routes.forEach(function(route) {
-		mapping = path.sep + route.split(path.sep).slice(prefix).join(path.sep);
+		mapping = path.sep + route.split('/').slice(prefix).join('/');
 		app.get(mapping, function(req, res) {
 			res.type('text/javascript').sendfile(route);
 		});