diff --git a/files/en-us/web/css/mask-clip/index.md b/files/en-us/web/css/mask-clip/index.md
index 18c37dc52d4bd99..0bbbcbc175f3dbb 100644
--- a/files/en-us/web/css/mask-clip/index.md
+++ b/files/en-us/web/css/mask-clip/index.md
@@ -12,7 +12,7 @@ The **`mask-clip`** [CSS](/en-US/docs/Web/CSS) property determines the area whic
 ## Syntax
 
 ```css
-/* <geometry-box> values */
+/* <coord-box> values */
 mask-clip: content-box;
 mask-clip: padding-box;
 mask-clip: border-box;