diff --git a/pkgs/build-support/build-mozilla-mach/default.nix b/pkgs/build-support/build-mozilla-mach/default.nix
index efaff0805e95..3363d89fa7b1 100644
--- a/pkgs/build-support/build-mozilla-mach/default.nix
+++ b/pkgs/build-support/build-mozilla-mach/default.nix
@@ -332,25 +332,6 @@ buildStdenv.mkDerivation {
       # https://hg-edge.mozilla.org/mozilla-central/rev/aa8a29bd1fb9
       ./139-wayland-drag-animation.patch
     ]
-    # Revert apple sdk bump to 26.1 and 26.2
-    ++
-      lib.optionals (lib.versionAtLeast version "148" && lib.versionOlder apple-sdk_26.version "26.2")
-        [
-          (fetchpatch {
-            url = "https://github.com/mozilla-firefox/firefox/commit/73cbb9ff0fdbf8b13f38d078ce01ef6ec0794f9c.patch";
-            hash = "sha256-ghdddJxsaxXzLZpOOfwss+2S/UUcbLqKGzWWqKy9h/k=";
-            revert = true;
-          })
-        ]
-    ++
-      lib.optionals (lib.versionAtLeast version "146" && lib.versionOlder apple-sdk_26.version "26.1")
-        [
-          (fetchpatch {
-            url = "https://github.com/mozilla-firefox/firefox/commit/c1cd0d56e047a40afb2a59a56e1fd8043e448e05.patch";
-            hash = "sha256-bFHLy3b0jOcROqltIwHwSAqWYve8OZHbiPMOdhLUCLc=";
-            revert = true;
-          })
-        ]
     ++ extraPatches;
 
   postPatch = ''