diff --git a/doc/README.md b/doc/README.md
index 2d681aadf..06fba7430 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -115,7 +115,7 @@ gridstack.js API
 - `marginLeft`: numberOrString
 - `maxRow` - maximum rows amount. Default is `0` which means no max.
 - `minRow` - minimum rows amount which is handy to prevent grid from collapsing when empty. Default is `0`. You can also do this with `min-height` CSS attribute on the grid div in pixels, which will round to the closest row.
-- `minW` - minimal width. If grid width is less than or equal to, grid will be shown in one-column mode (default: `768`)
+- `oneColumnSize` - minimal width. If grid width is less than or equal to, grid will be shown in one-column mode (default: `768`)
 - `oneColumnModeDomSort` - set to `true` if you want oneColumnMode to use the DOM order and ignore x,y from normal multi column layouts during sorting. This enables you to have custom 1 column layout that differ from the rest. (default?: `false`)
 - `placeholderClass` - class for placeholder (default: `'grid-stack-placeholder'`)
 - `placeholderText` - placeholder default content (default: `''`)