diff --git a/index.js b/index.js
index 21ff20a..0964390 100644
--- a/index.js
+++ b/index.js
@@ -179,7 +179,7 @@ HtmlWebpackPlugin.prototype.htmlWebpackPluginAssets = function(compilation, webp
       path.relative(path.dirname(self.options.filename), '.');
 
   if (publicPath.length && publicPath.substr(-1, 1) !== '/') {
-    publicPath = urlModule.resolve(publicPath + '/', '.') + '/';
+    publicPath = path.join(urlModule.resolve(publicPath + '/', '.'), '/');
   }
 
   var assets = {