diff --git a/index.html b/index.html
index 45ee97f4..dd0a38ed 100644
--- a/index.html
+++ b/index.html
@@ -4585,7 +4585,7 @@
Interactability
Let rectangle be
- the first element of the {{DOMRect}} sequence
+ the first object of the {{DOMRect}} collection
returned by calling {{Element/getClientRects()}} on element.
Let left be