diff --git a/buildroot-external/scripts/ota.sh b/buildroot-external/scripts/ota.sh
index 4f6c101c7..cd7bbfc2a 100755
--- a/buildroot-external/scripts/ota.sh
+++ b/buildroot-external/scripts/ota.sh
@@ -41,7 +41,7 @@ function create_ota_update() {
     ) > "${rauc_folder}/manifest.raucm"
 
     # SPL
-    if [ "${BOOT_SYS}" == "spl" ]; then
+    if [[ "${BOOT_SYS}" =~ (spl|mbr) ]]; then
         cp -f "${spl}" "${rauc_folder}/spl.img"
 
         (