diff --git a/modules/rubiconBidAdapter.js b/modules/rubiconBidAdapter.js
index 55937a3feda..16b51c38ed9 100644
--- a/modules/rubiconBidAdapter.js
+++ b/modules/rubiconBidAdapter.js
@@ -25,6 +25,7 @@ var sizeMap = {
   14: '250x250',
   15: '300x250',
   16: '336x280',
+  17: '240x400',
   19: '300x100',
   31: '980x120',
   32: '250x360',