diff --git a/stat.c b/stat.c
index d8c01d1..efa811d 100644
--- a/stat.c
+++ b/stat.c
@@ -2749,7 +2749,7 @@ static unsigned long add_log_sample(struct thread_data *td,
 			return diff;
 	}
 
-	_add_stat_to_log(iolog, elapsed, td->o.log_max != 0, priority_bit);
+	__add_stat_to_log(iolog, ddir, elapsed, td->o.log_max != 0, priority_bit);
 
 	iolog->avg_last[ddir] = elapsed - (this_window - iolog->avg_msec);
 	return iolog->avg_msec;