diff --git a/browser_patches/firefox-beta/BUILD_NUMBER b/browser_patches/firefox-beta/BUILD_NUMBER
index a76abc1bfc..483013339a 100644
--- a/browser_patches/firefox-beta/BUILD_NUMBER
+++ b/browser_patches/firefox-beta/BUILD_NUMBER
@@ -1,2 +1,2 @@
-1275
-Changed: yurys@chromium.org Tue 10 Aug 2021 03:19:51 PM PDT
+1276
+Changed: yurys@chromium.org Wed 11 Aug 2021 01:41:01 PM PDT
diff --git a/browser_patches/firefox-beta/juggler/NetworkObserver.js b/browser_patches/firefox-beta/juggler/NetworkObserver.js
index 68bb804f65..c3d2ac423b 100644
--- a/browser_patches/firefox-beta/juggler/NetworkObserver.js
+++ b/browser_patches/firefox-beta/juggler/NetworkObserver.js
@@ -344,7 +344,6 @@ class NetworkRequest {
       status = status || originalResponse.status;
       statusText = statusText || originalResponse.statusText;
       headers = headers || originalResponse.headers;
-      body = body || originalResponse.body;
     }
     this._interceptedChannel.synthesizeStatus(status, statusText);
     for (const header of headers) {
diff --git a/browser_patches/firefox/BUILD_NUMBER b/browser_patches/firefox/BUILD_NUMBER
index d85b391821..ac84447749 100644
--- a/browser_patches/firefox/BUILD_NUMBER
+++ b/browser_patches/firefox/BUILD_NUMBER
@@ -1,2 +1,2 @@
-1281
-Changed: lushnikov@chromium.org Tue 10 Aug 2021 05:33:38 PM PDT
+1282
+Changed: yurys@chromium.org Wed 11 Aug 2021 01:40:40 PM PDT
diff --git a/browser_patches/firefox/juggler/NetworkObserver.js b/browser_patches/firefox/juggler/NetworkObserver.js
index 68bb804f65..c3d2ac423b 100644
--- a/browser_patches/firefox/juggler/NetworkObserver.js
+++ b/browser_patches/firefox/juggler/NetworkObserver.js
@@ -344,7 +344,6 @@ class NetworkRequest {
       status = status || originalResponse.status;
       statusText = statusText || originalResponse.statusText;
       headers = headers || originalResponse.headers;
-      body = body || originalResponse.body;
     }
     this._interceptedChannel.synthesizeStatus(status, statusText);
     for (const header of headers) {