diff --git a/src/sound/snd_adlibgold.c b/src/sound/snd_adlibgold.c
index 488dcb8a6..8f62d0417 100644
--- a/src/sound/snd_adlibgold.c
+++ b/src/sound/snd_adlibgold.c
@@ -791,8 +791,8 @@ adgold_get_buffer(int32_t *buffer, int len, void *priv)
     adgold_update(adgold);
 
     for (c = 0; c < len * 2; c += 2) {
-        adgold_buffer[c] += ((adgold->mma_buffer[0][c >> 1] * adgold->samp_vol_l) >> 7) / 4;
-        adgold_buffer[c + 1] += ((adgold->mma_buffer[1][c >> 1] * adgold->samp_vol_r) >> 7) / 4;
+        adgold_buffer[c] = ((adgold->mma_buffer[0][c >> 1] * adgold->samp_vol_l) >> 7) / 4;
+        adgold_buffer[c + 1] = ((adgold->mma_buffer[1][c >> 1] * adgold->samp_vol_r) >> 7) / 4;
     }
 
     if (adgold->surround_enabled)
@@ -904,7 +904,6 @@ adgold_get_music_buffer(int32_t *buffer, int len, void *priv)
     int c;
 
     const int32_t *opl_buf = adgold->opl.update(adgold->opl.priv);
-    adgold_update(adgold);
 
     for (c = 0; c < len * 2; c += 2) {
         adgold_buffer[c] = ((opl_buf[c] * adgold->fm_vol_l) >> 7) / 2;