diff --git a/lib/services/test-execution-service.ts b/lib/services/test-execution-service.ts
index 2a7a9d7689..b8fc54f05b 100644
--- a/lib/services/test-execution-service.ts
+++ b/lib/services/test-execution-service.ts
@@ -125,7 +125,7 @@ export class TestExecutionService implements ITestExecutionService {
 				await this.$liveSyncService.liveSync(deviceDescriptors, liveSyncInfo);
 			};
 
-		karmaRunner.on("message",  (karmaData: any) => {
+		karmaRunner.on("message", (karmaData: any) => {
 			this.$logger.trace(`The received message from karma is: `, karmaData);
 			if (!karmaData.launcherConfig && !karmaData.url) {
 				return;
@@ -219,6 +219,7 @@ export class TestExecutionService implements ITestExecutionService {
 
 		karmaConfig.projectDir = projectData.projectDir;
 		karmaConfig.bundle = this.$options.bundle;
+		karmaConfig.debugBrk = this.$options.debugBrk;
 		karmaConfig.platform = platform.toLowerCase();
 		this.$logger.debug(JSON.stringify(karmaConfig, null, 4));
 
diff --git a/resources/test/karma.conf.js b/resources/test/karma.conf.js
index 918a6cee93..705b5a713e 100644
--- a/resources/test/karma.conf.js
+++ b/resources/test/karma.conf.js
@@ -1,4 +1,4 @@
-module.exports = function(config) {
+module.exports = function (config) {
   const options = {
 
     // base path that will be used to resolve all patterns (eg. files, exclude)
@@ -11,7 +11,7 @@ module.exports = function(config) {
 
 
     // list of files / patterns to load in the browser
-    files: [ ${ testFiles } ],
+    files: [${ testFiles }],
 
 
     // list of files to exclude
@@ -75,7 +75,7 @@ module.exports = function(config) {
 
   setWebpackPreprocessor(config, options);
   setWebpack(config, options);
-  
+
   config.set(options);
 }
 
@@ -98,6 +98,7 @@ function setWebpack(config, options) {
   if (config && config.bundle) {
     const env = {};
     env[config.platform] = true;
+    env.sourceMap = config.debugBrk;
     options.webpack = require('./webpack.config')(env);
     delete options.webpack.entry;
     delete options.webpack.output.libraryTarget;