diff --git a/test/sd-script.py b/test/sd-script.py
index b41e3597cb..c695c2e2cd 100644
--- a/test/sd-script.py
+++ b/test/sd-script.py
@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-# SPDX-License-Identifier: LGPL-2.1+
+# SPDX-License-Identifier: LGPL-2.1-or-later
 #
 # sd-script.py: create LOTS of sd device entries in fake sysfs
 #
diff --git a/units/user/app.slice b/units/user/app.slice
index 065ea77e96..0c73135e17 100644
--- a/units/user/app.slice
+++ b/units/user/app.slice
@@ -1,4 +1,4 @@
-#  SPDX-License-Identifier: LGPL-2.1+
+#  SPDX-License-Identifier: LGPL-2.1-or-later
 #
 #  This file is part of systemd.
 #
diff --git a/units/user/background.slice b/units/user/background.slice
index 03c89b66be..8f2a0949bd 100644
--- a/units/user/background.slice
+++ b/units/user/background.slice
@@ -1,4 +1,4 @@
-#  SPDX-License-Identifier: LGPL-2.1+
+#  SPDX-License-Identifier: LGPL-2.1-or-later
 #
 #  This file is part of systemd.
 #
diff --git a/units/user/session.slice b/units/user/session.slice
index e0b38c5e32..3d99d51bc5 100644
--- a/units/user/session.slice
+++ b/units/user/session.slice
@@ -1,4 +1,4 @@
-#  SPDX-License-Identifier: LGPL-2.1+
+#  SPDX-License-Identifier: LGPL-2.1-or-later
 #
 #  This file is part of systemd.
 #