diff --git a/libavfilter/af_astats.c b/libavfilter/af_astats.c
index d59640a3fd..306a6603a2 100644
--- a/libavfilter/af_astats.c
+++ b/libavfilter/af_astats.c
@@ -668,6 +668,9 @@ static void print_stats(AVFilterContext *ctx)
     for (c = 0; c < s->nb_channels; c++) {
         ChannelStats *p = &s->chstats[c];
 
+        if (p->nb_samples == 0)
+            continue;
+
         if (p->nb_samples < s->tc_samples)
             p->min_sigma_x2 = p->max_sigma_x2 = p->sigma_x2 / p->nb_samples;
 
@@ -754,6 +757,9 @@ static void print_stats(AVFilterContext *ctx)
             av_log(ctx, AV_LOG_INFO, "Number of denormals: %"PRId64"\n", p->nb_denormals);
     }
 
+    if (nb_samples == 0)
+        return;
+
     if (s->measure_overall != MEASURE_NONE)
         av_log(ctx, AV_LOG_INFO, "Overall\n");
     if (s->measure_overall & MEASURE_DC_OFFSET)