diff --git a/extra/mesa/build b/extra/mesa/build
index f5179926..7400edef 100755
--- a/extra/mesa/build
+++ b/extra/mesa/build
@@ -24,13 +24,6 @@
 }
 export PYTHONPATH
 
-# Fix issues with musl and firefox.
-# https://bugs.freedesktop.org/show_bug.cgi?id=35268
-# https://github.com/mesa3d/mesa/commit/9f37c9903b87f86a533bfaffa72f0ecb285b02b2
-# https://gitlab.freedesktop.org/mesa/mesa/-/issues/966
-sed "/pre_args += '-DUSE_ELF_TLS'/d" meson.build > _
-mv -f _ meson.build
-
 # To prevent the need for users to fork the mesa package to add
 # libglvnd support, the below code checks for its availability
 # and enables it if present. ie: install glvnd, rebuild mesa.