diff --git a/karma.conf.js b/karma.conf.js
index 4e95db87..0f9b7050 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -13,8 +13,8 @@ module.exports = karmaConfig({
   browsers: {
     chrome: host.ci ? host.os.linux : true,
     firefox: host.ci ? host.os.linux : true,
-    safari: host.ci ? host.os.linux : host.os.mac,    // SauceLabs in CI
+    // safari: host.ci ? host.os.linux : host.os.mac,    // SauceLabs in CI
     edge: host.ci ? host.os.linux : host.os.windows,  // SauceLabs in CI
-    ie: host.ci ? host.os.windows : false,  // IE needs to run by itself, due to Babel transforms
+    // ie: host.ci ? host.os.windows : false,  // IE needs to run by itself, due to Babel transforms
   },
 });