diff --git a/tools/perf/tests/sw-clock.c b/tools/perf/tests/sw-clock.c
index 5b83f56..36e8ce1 100644
--- a/tools/perf/tests/sw-clock.c
+++ b/tools/perf/tests/sw-clock.c
@@ -122,7 +122,7 @@
 	return err;
 }
 
-int test__sw_clock_freq(void)
+int test__sw_clock_freq(int subtest __maybe_unused)
 {
 	int ret;