diff --git a/karma-shared.conf.js b/karma-shared.conf.js
index 672576e83..aa42dee1d 100644
--- a/karma-shared.conf.js
+++ b/karma-shared.conf.js
@@ -113,7 +113,6 @@ module.exports = function(config, specificOptions) {
       'SL_iOS_11': {
         base: 'SauceLabs',
         browserName: 'iphone',
-        platform: 'OS X 10.12',
         version: '11.3'
       },