diff --git a/tools/testing/selftests/damon/sysfs.sh b/tools/testing/selftests/damon/sysfs.sh
index b3418214ed35..92b44c86818a 100755
--- a/tools/testing/selftests/damon/sysfs.sh
+++ b/tools/testing/selftests/damon/sysfs.sh
@@ -365,6 +365,7 @@ test_context()
 	ensure_dir "$context_dir" "exist"
 	ensure_file "$context_dir/avail_operations" "exit" 400
 	ensure_file "$context_dir/operations" "exist" 600
+	ensure_file "$context_dir/addr_unit" "exist" 600
 	test_monitoring_attrs "$context_dir/monitoring_attrs"
 	test_targets "$context_dir/targets"
 	test_schemes "$context_dir/schemes"