diff --git a/filter/bs412.c b/filter/bs412.c
index 4544301..c2b9c6a 100644
--- a/filter/bs412.c
+++ b/filter/bs412.c
@@ -51,6 +51,7 @@ float bs412_compress(BS412Compressor* mpx, float sample) {
 		mpx->gain = mpx->gain * mpx->attack + (1.0f - mpx->attack) * gain_target;
 	else
 		mpx->gain = mpx->gain * mpx->release + (1.0f - mpx->release) * gain_target;
+	mpx->gain = fminf(1.0f, mpx->gain);
 
 	return fminf(sample*mpx->gain, dbr_to_deviation(mpx->target*1.1f));
 }