diff --git a/testing/web-platform/tests/interfaces/picture-in-picture.idl b/testing/web-platform/tests/interfaces/picture-in-picture.idl
index 19a3608b4b35b..516fb59d8d414 100644
--- a/testing/web-platform/tests/interfaces/picture-in-picture.idl
+++ b/testing/web-platform/tests/interfaces/picture-in-picture.idl
@@ -9,7 +9,6 @@ partial interface HTMLVideoElement {
   attribute EventHandler onenterpictureinpicture;
   attribute EventHandler onleavepictureinpicture;
 
-  [CEReactions] attribute boolean autoPictureInPicture;
   [CEReactions] attribute boolean disablePictureInPicture;
 };