diff --git a/docs/size.md b/docs/size.md
index 1aff8ccd44df..9497df03f263 100644
--- a/docs/size.md
+++ b/docs/size.md
@@ -35,7 +35,7 @@ const DEVICE_RATIO = {
   '640': 2.34 / 2,
   '750': 1,
   '828': 1.81 / 2,
-  '375': 1 / 2
+  '375': 2 / 1
 }
 ```