diff --git a/CHANGELOG.md b/CHANGELOG.md
index 431d9857..379b504b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,16 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+<a name="3.0.5"></a>
+## [3.0.5](https://github.com/webpack-contrib/karma-webpack/compare/v3.0.4...v3.0.5) (2018-09-14)
+
+
+### Bug Fixes
+
+* **karma-webpack:** handle multiple outputs correctly ([#357](https://github.com/webpack-contrib/karma-webpack/issues/357)) ([59de62c](https://github.com/webpack-contrib/karma-webpack/commit/59de62c))
+
+
+
 <a name="3.0.4"></a>
 ## [3.0.4](https://github.com/webpack-contrib/karma-webpack/compare/v3.0.3...v3.0.4) (2018-09-07)
 
diff --git a/package-lock.json b/package-lock.json
index 1b57557c..fbc7d316 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "karma-webpack",
-  "version": "3.0.4",
+  "version": "3.0.5",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index bab20bb0..d8af7059 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "karma-webpack",
-  "version": "3.0.4",
+  "version": "3.0.5",
   "author": "Tobias Koppers @sokra",
   "description": "Use webpack with karma",
   "license": "MIT",
diff --git a/src/karma-webpack.js b/src/karma-webpack.js
index 232cce60..8a78db55 100644
--- a/src/karma-webpack.js
+++ b/src/karma-webpack.js
@@ -237,7 +237,11 @@ Plugin.prototype.readFile = function(file, callback) {
   var doRead = function() {
     if (optionsCount > 1) {
       async.times(optionsCount, function(idx, callback) {
-        middleware.fileSystem.readFile(path.join(os.tmpdir(), '_karma_webpack_', String(idx), this.outputs[file]), callback)
+        if (Array.isArray(this.outputs[file])) {
+          middleware.fileSystem.readFile(path.join(os.tmpdir(), '_karma_webpack_', String(idx), this.outputs[file][0]), callback);
+        } else {
+          middleware.fileSystem.readFile(path.join(os.tmpdir(), '_karma_webpack_', String(idx), this.outputs[file]), callback);
+        }
       }.bind(this), function(err, contents) {
         if (err) {
           return callback(err)
@@ -253,8 +257,13 @@ Plugin.prototype.readFile = function(file, callback) {
         callback(null, Buffer.concat(contents))
       })
     } else {
-      try {
-        var fileContents = middleware.fileSystem.readFileSync(path.join(os.tmpdir(), '_karma_webpack_', this.outputs[file]))
+      try {	 
+        var fileContents = ''
+        if (Array.isArray(this.outputs[file])) {
+          fileContents = middleware.fileSystem.readFileSync(path.join(os.tmpdir(), '_karma_webpack_', this.outputs[file][0]));
+        } else {
+          fileContents = middleware.fileSystem.readFileSync(path.join(os.tmpdir(), '_karma_webpack_', this.outputs[file]));
+        }
 
         callback(undefined, fileContents)
       } catch (e) {
@@ -297,7 +306,11 @@ function createPreprocesor(/* config.basePath */ basePath, webpackPlugin) {
       }
 
       var outputPath = webpackPlugin.outputs[normalize(filename)]
-      file.path = normalize(path.join(basePath, outputPath))
+      if( Array.isArray(outputPath)){
+        file.path = normalize(path.join(basePath, outputPath[0]));
+      } else {
+        file.path = normalize(path.join(basePath, outputPath));
+      }
 
       done(err, content && content.toString())
     })