diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index 7d4bb83..d7cbc57 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -4066,6 +4066,7 @@
 	hwc->sample_period = attr->sample_period;
 	if (attr->freq && attr->sample_freq)
 		hwc->sample_period = 1;
+	hwc->last_period = hwc->sample_period;
 
 	atomic64_set(&hwc->period_left, hwc->sample_period);