diff --git a/tools/perf/util/stat.c b/tools/perf/util/stat.c
index d028c2786802..821e5790eb0e 100644
--- a/tools/perf/util/stat.c
+++ b/tools/perf/util/stat.c
@@ -350,8 +350,10 @@ int perf_stat_process_counter(struct perf_stat_config *config,
 	 * interval mode, otherwise overall avg running
 	 * averages will be shown for each interval.
 	 */
-	if (config->interval)
-		init_stats(ps->res_stats);
+	if (config->interval) {
+		for (i = 0; i < 3; i++)
+			init_stats(&ps->res_stats[i]);
+	}
 
 	if (counter->per_pkg)
 		zero_per_pkg(counter);