diff --git a/meta/recipes-support/expand-on-first-boot/files/expand-on-first-boot.service b/meta/recipes-support/expand-on-first-boot/files/expand-on-first-boot.service
index 90c92a39..8e76998b 100644
--- a/meta/recipes-support/expand-on-first-boot/files/expand-on-first-boot.service
+++ b/meta/recipes-support/expand-on-first-boot/files/expand-on-first-boot.service
@@ -16,6 +16,7 @@ Type=oneshot
 ExecStart=/usr/share/expand-on-first-boot/expand-last-partition.sh
 ExecStartPost=-/bin/systemctl disable expand-on-first-boot.service
 ExecStopPost=-/bin/systemctl disable expand-on-first-boot.service
+PrivateTmp=true
 
 [Install]
 WantedBy=sysinit.target