diff --git a/karma.conf.js b/karma.conf.js
index ab45bfb235a..51236c866e4 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -39,7 +39,7 @@ module.exports = function(config) {
     colors: true,
     logLevel: config.LOG_INFO,
     autoWatch: true,
-    browsers: ['Chrome'],
+    browsers: ['Firefox'],
     singleRun: false
   });
 };
diff --git a/scripts/ci/build-and-test.sh b/scripts/ci/build-and-test.sh
old mode 100644
new mode 100755