diff --git a/tools/perf/pmu-events/pmu-events.h b/tools/perf/pmu-events/pmu-events.h
index 53e76d5d5b37..c8f306b572f4 100644
--- a/tools/perf/pmu-events/pmu-events.h
+++ b/tools/perf/pmu-events/pmu-events.h
@@ -26,7 +26,7 @@ struct pmu_event {
  * Map a CPU to its table of PMU events. The CPU is identified by the
  * cpuid field, which is an arch-specific identifier for the CPU.
  * The identifier specified in tools/perf/pmu-events/arch/xxx/mapfile
- * must match the get_cpustr() in tools/perf/arch/xxx/util/header.c)
+ * must match the get_cpuid_str() in tools/perf/arch/xxx/util/header.c)
  *
  * The  cpuid can contain any character other than the comma.
  */