let's merge

mui · Aug 18, 2018 · b8434ca · b8434ca
1 parent 9e3d7cf
commit b8434ca
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/packages/material-ui/src/Popover/Popover.js b/packages/material-ui/src/Popover/Popover.js
@@ -239,7 +239,8 @@ class Popover extends React.Component {
           'Material-UI: you can not change the default `anchorOrigin.vertical` value ',
           'when also providing the `getContentAnchorEl` property to the popover component.',
           'Only use one of the two properties.',
-          'Set `getContentAnchorEl` to null or leave `anchorOrigin.vertical` unchanged.',
+          'Set `getContentAnchorEl` to `null | undefined`' +
+            ' or leave `anchorOrigin.vertical` unchanged.',
         ].join('\n'),
       );
     }