diff --git a/docs/components/popup.md b/docs/components/popup.md
index cc538b151..042fd1bc1 100644
--- a/docs/components/popup.md
+++ b/docs/components/popup.md
@@ -1199,7 +1199,7 @@ const App = () => {
 
 Use the `auto-size` attribute to tell the popup to resize when necessary to prevent it from getting clipped. Possible values are `horizontal`, `vertical`, and `both`. You can use `autoSizeBoundary` and `auto-size-padding` to customize the behavior of this option. Auto-size works well with `flip`, but if you're using `auto-size-padding` make sure `flip-padding` is the same value.
 
-When using auto-size, two read-only custom properties called `--auto-size-available-width` and `--auto-size-available-height` will be applied to the host element. These values determine the available space the popover has before clipping will occur. Since they cascade, you can use them to set a max-width/height on your popup's content and easily control its overflow.
+When using `auto-size`, one or both of `--auto-size-available-width` and `--auto-size-available-height` will be applied to the host element. These values determine the available space the popover has before clipping will occur. Since they cascade, you can use them to set a max-width/height on your popup's content and easily control its overflow.
 
 Scroll the container to see the popup resize as its available space changes.