diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index fcc57c2..b9813c7 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -23,6 +23,8 @@ Deprecated
 Fixed
 -----
 
+- Add missing replacement for the UUID variable in systemd-boot configuration files on ISO 9660.
+
 Removed
 -------
 
diff --git a/archiso/mkarchiso b/archiso/mkarchiso
index 7890615..fc5976c 100755
--- a/archiso/mkarchiso
+++ b/archiso/mkarchiso
@@ -868,6 +868,7 @@ _make_common_bootmode_systemd-boot_conf.isofs() {
     install -m 0644 -- "${profile}/efiboot/loader/loader.conf" "${isofs_dir}/loader/"
     for _conf in "${profile}/efiboot/loader/entries/"*".conf"; do
         sed "s|%ARCHISO_LABEL%|${iso_label}|g;
+             s|%ARCHISO_UUID%|${iso_uuid}|g;
              s|%INSTALL_DIR%|${install_dir}|g;
              s|%ARCH%|${arch}|g" \
             "${_conf}" >"${isofs_dir}/loader/entries/${_conf##*/}"