diff --git a/tests/zfs-tests/tests/functional/dedup/dedup_fdt_pacing.ksh b/tests/zfs-tests/tests/functional/dedup/dedup_fdt_pacing.ksh
index 8cbc93d6e..8028e4f08 100755
--- a/tests/zfs-tests/tests/functional/dedup/dedup_fdt_pacing.ksh
+++ b/tests/zfs-tests/tests/functional/dedup/dedup_fdt_pacing.ksh
@@ -1,4 +1,5 @@
 #!/bin/ksh -p
+# SPDX-License-Identifier: CDDL-1.0
 # CDDL HEADER START
 #
 # The contents of this file are subject to the terms of the