diff --git a/packages/material-ui/src/Snackbar/Snackbar.js b/packages/material-ui/src/Snackbar/Snackbar.js
index 50656f406956fc..3d11c4daa9440e 100644
--- a/packages/material-ui/src/Snackbar/Snackbar.js
+++ b/packages/material-ui/src/Snackbar/Snackbar.js
@@ -96,7 +96,7 @@ export const styles = theme => {
 const Snackbar = React.forwardRef(function Snackbar(props, ref) {
   const {
     action,
-    anchorOrigin: { vertical = 'bottom', horizontal = 'center' },
+    anchorOrigin: { vertical, horizontal } = { vertical: 'bottom', horizontal: 'center' },
     autoHideDuration,
     children,
     classes,
diff --git a/pages/api/snackbar.md b/pages/api/snackbar.md
index 71cb3724e020ac..5362c19fc5ddcf 100644
--- a/pages/api/snackbar.md
+++ b/pages/api/snackbar.md
@@ -19,7 +19,7 @@ import Snackbar from '@material-ui/core/Snackbar';
 | Name | Type | Default | Description |
 |:-----|:-----|:--------|:------------|
 | <span class="prop-name">action</span> | <span class="prop-type">node</span> |  | The action to display. |
-| <span class="prop-name">anchorOrigin</span> | <span class="prop-type">{ horizontal: enum:&nbsp;'left'&nbsp;&#124;<br>&nbsp;'center'&nbsp;&#124;<br>&nbsp;'right'<br>, vertical: enum:&nbsp;'top'&nbsp;&#124;<br>&nbsp;'bottom'<br> }</span> | <span class="prop-default">{  vertical: 'bottom',  horizontal: 'center',}</span> | The anchor of the `Snackbar`. |
+| <span class="prop-name">anchorOrigin</span> | <span class="prop-type">{ horizontal: enum:&nbsp;'left'&nbsp;&#124;<br>&nbsp;'center'&nbsp;&#124;<br>&nbsp;'right'<br>, vertical: enum:&nbsp;'top'&nbsp;&#124;<br>&nbsp;'bottom'<br> }</span> | <span class="prop-default">{ vertical: 'bottom', horizontal: 'center' }</span> | The anchor of the `Snackbar`. |
 | <span class="prop-name">autoHideDuration</span> | <span class="prop-type">number</span> |  | The number of milliseconds to wait before automatically calling the `onClose` function. `onClose` should then set the state of the `open` prop to hide the Snackbar. This behavior is disabled by default with the `null` value. |
 | <span class="prop-name">children</span> | <span class="prop-type">element</span> |  | Replace the `SnackbarContent` component. |
 | <span class="prop-name">classes</span> | <span class="prop-type">object</span> |  | Override or extend the styles applied to the component. See [CSS API](#css) below for more details. |