diff --git a/k3os/set_hostname.sh b/k3os/set_hostname.sh
index 50e5e2a..35d1287 100644
--- a/k3os/set_hostname.sh
+++ b/k3os/set_hostname.sh
@@ -58,6 +58,8 @@ set_hostname() {
         echo "Warning: Failed to remount $CONFIG_DIR back to read-only. Proceeding..."
     fi
 
+    echo '$HOSTNAME_ENTRY' > /var/lib/rancher/k3os/hostname
+
     # 4. Report status
     if [ $MODIFICATION_STATUS -eq 0 ]; then
         echo ""