diff --git a/Makefile b/Makefile
index 02649a7..b4959b9 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 SUBDIRS := $(wildcard */.)
-VERSION = 24.08
+VERSION = 24.09
 
 install:
 	@for dir in $(SUBDIRS) ; do \
diff --git a/matter-iso/main.sh b/matter-iso/main.sh
index e948076..02f4b02 100755
--- a/matter-iso/main.sh
+++ b/matter-iso/main.sh
@@ -200,7 +200,7 @@ rm "${tmpdir}/stager.sh"
 
 info "Cleaning up and building initrd"
 rm "${isoh}"
-pushd "$TMPDIR" > /dev/null
+pushd "${tmpdir}" > /dev/null
   mkdir -p "${rootdir}/boot"
   find . | cpio --quiet -H newc -o | xz -T0 --check=crc32 > "${rootdir}/boot/initrd.img"
   check_ret "Failed to build initrd"