diff --git a/media/audioipc/update.sh b/media/audioipc/update.sh
index efc06f18b168..82b505d93fa2 100755
--- a/media/audioipc/update.sh
+++ b/media/audioipc/update.sh
@@ -5,13 +5,13 @@ cp -p $1/README.md .
 cp -p $1/Cargo.toml .
 
 for crate in audioipc client server; do
+    test -d $crate/src || mkdir -p $crate/src
     rm -fr $crate/*
-    mkdir -p $crate/src
-    cp -pr $1/$crate/Cargo.toml $crate
-    cp -pr $1/$crate/src/ $crate/
+    cp -pr $1/$crate/Cargo.toml $crate/
+    cp -pr $1/$crate/src/ $crate/src/
 done
 
-rm -f audioipc/src/cmsghdr.c
+rm audioipc/src/cmsghdr.c
 
 if [ -d $1/.git ]; then
   rev=$(cd $1 && git rev-parse --verify HEAD)
diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index 79c2c15ba90b..ccfc24921eef 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -561,11 +561,6 @@ pref("media.cubeb.logging_level", "");
   pref("media.audioipc.pool_size", 1);
   // 64 * 4 kB stack per pool thread.
   pref("media.audioipc.stack_size", 262144);
-#elif defined(NIGHTLY_BUILD) && defined(XP_WIN) && !defined(_ARM64_)
-  pref("media.cubeb.sandbox", true);
-  pref("media.audioipc.pool_size", 1);
-  // 64 * 4 kB stack per pool thread.
-  pref("media.audioipc.stack_size", 262144);
 #else
   pref("media.cubeb.sandbox", false);
 #endif