diff --git a/2-ui/1-document/11-coordinates/article.md b/2-ui/1-document/11-coordinates/article.md
index 18d56cd2..b4b577cd 100644
--- a/2-ui/1-document/11-coordinates/article.md
+++ b/2-ui/1-document/11-coordinates/article.md
@@ -91,7 +91,7 @@ In practice though, `elem.getBoundingClientRect()` always returns positive width
 ```warn header="Internet Explorer and Edge: no support for `x/y`"
 Internet Explorer and Edge don't support `x/y` properties for historical reasons.
 
-So we can either make a polywill (add getters in `DomRect.prototype`) or just use `top/left`, as they are always the same as `x/y` for positive `width/height`, in particular in the result of `elem.getBoundingClientRect()`.
+So we can either make a polyfill (add getters in `DomRect.prototype`) or just use `top/left`, as they are always the same as `x/y` for positive `width/height`, in particular in the result of `elem.getBoundingClientRect()`.
 ```
 
 ```warn header="Coordinates right/bottom are different from CSS position properties"