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-rw-r--r--tools/perf/util/stat.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
index 2374212..7c59c28 100644
--- a/tools/perf/util/stat.c
+++ b/tools/perf/util/stat.c
@@ -37,7 +37,7 @@ double stddev_stats(struct stats *stats)
{
double variance, variance_mean;
- if (!stats->n)
+ if (stats->n < 2)
return 0.0;
variance = stats->M2 / (stats->n - 1);
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