diff --git a/index.js b/index.js
index e84a9aa..4c5c66a 100644
--- a/index.js
+++ b/index.js
@@ -41,6 +41,9 @@ var JUnitReporter = function (baseReporterDecorator, config, logger, helper, for
   var writeXmlForBrowser = function (browser) {
     var outputFile = outputDir + 'TESTS-' + browser.name.replace(/ /g, '_') + '.xml'
     var xmlToOutput = suites[browser.id]
+    if (!xmlToOutput) {
+      return; // don't die if browser didn't start
+    }
 
     pendingFileWritings++
     helper.mkdirIfNotExists(outputDir, function () {
@@ -72,6 +75,9 @@ var JUnitReporter = function (baseReporterDecorator, config, logger, helper, for
   this.onBrowserComplete = function (browser) {
     var suite = suites[browser.id]
     var result = browser.lastResult
+    if (!suite || !result) {
+      return; // don't die if browser didn't start
+    }
 
     suite.att('tests', result.total)
     suite.att('errors', result.disconnected || result.error ? 1 : 0)