diff --git a/libavfilter/af_dynaudnorm.c b/libavfilter/af_dynaudnorm.c
index b78b3df85e..62979a5cd0 100644
--- a/libavfilter/af_dynaudnorm.c
+++ b/libavfilter/af_dynaudnorm.c
@@ -471,7 +471,7 @@ static void update_gain_history(DynamicAudioNormalizerContext *s, int channel,
 {
     if (cqueue_empty(s->gain_history_original[channel])) {
         const int pre_fill_size = s->filter_size / 2;
-        const double initial_value = s->alt_boundary_mode ? gain.max_gain : s->peak_value;
+        const double initial_value = s->alt_boundary_mode ? gain.max_gain : FFMIN(1.0, gain.max_gain);
 
         s->prev_amplification_factor[channel] = initial_value;