diff --git a/lib/optimize/UglifyJsPlugin.js b/lib/optimize/UglifyJsPlugin.js
index 1b84c4b42..ed563c02a 100644
--- a/lib/optimize/UglifyJsPlugin.js
+++ b/lib/optimize/UglifyJsPlugin.js
@@ -53,7 +53,7 @@ UglifyJsPlugin.prototype.apply = function(compiler) {
 					ast.print(stream);
 					map = map + "";
 					stream = stream + "";
-					compilation.assets[file] = new SourceMapSource(stream, file, map, inputSourceMap);
+					compilation.assets[file] = new SourceMapSource(stream, file, map, input, inputSourceMap);
 				} catch(err) {
 					err.file = file;
 					compilation.warnings.push(err);
diff --git a/test/browsertest/middlewareTest.js b/test/browsertest/middlewareTest.js
index 6d2546f26..09a344775 100644
--- a/test/browsertest/middlewareTest.js
+++ b/test/browsertest/middlewareTest.js
@@ -10,7 +10,7 @@ app.configure(function() {
 		context: __dirname,
 		entry: "./lib/index",
 		debug: true,
-		devtool: "eval",
+		devtool: "sourcemap",
 		module: {
 			loaders: [
 				{ test: /\.json$/, loader: "json" },
@@ -25,6 +25,9 @@ app.configure(function() {
 				vm: "vm-browserify"
 			}
 		},
+		optimize: {
+			minimize: true
+		},
 		output: {
 			publicPath: "http://localhost:8080/js/",
 			filename: "web.js"