2 files changed, 2 insertions, 2 deletions
diff --git a/components/script/dom/webidls/Blob.webidl b/components/script/dom/webidls/Blob.webidl
index 572879ec621..14af967c2f0 100644
--- a/components/script/dom/webidls/Blob.webidl
+++ b/components/script/dom/webidls/Blob.webidl
@@ -17,7 +17,7 @@ interface Blob {
              optional [Clamp] long long end,
              optional DOMString contentType);
 
-  [NewObject] object stream();
+  [NewObject, Throws] ReadableStream stream();
   [NewObject] Promise<DOMString> text();
   [NewObject] Promise<ArrayBuffer> arrayBuffer();
 };
diff --git a/components/script/dom/webidls/Body.webidl b/components/script/dom/webidls/Body.webidl
index 5de4aa36813..1c730f499c1 100644
--- a/components/script/dom/webidls/Body.webidl
+++ b/components/script/dom/webidls/Body.webidl
@@ -7,7 +7,7 @@
 [Exposed=(Window,Worker)]
 interface mixin Body {
   readonly attribute boolean bodyUsed;
-  readonly attribute object? body;
+  readonly attribute ReadableStream? body;
 
   [NewObject] Promise<ArrayBuffer> arrayBuffer();
   [NewObject] Promise<Blob> blob();