diff --git a/include/lynx.h b/include/lynx.h
index a77625e2c..632e32f1e 100644
--- a/include/lynx.h
+++ b/include/lynx.h
@@ -124,6 +124,9 @@ void __fastcall__ lynx_snd_play (unsigned char channel, unsigned char *music);
 void lynx_snd_stop ();
 /* Stop sound on all channels */
 
+void __fastcall__ lynx_snd_stop_channel (unsigned char channel);
+/* Stop sound on all channels */
+
 unsigned char lynx_snd_active();
 /* Show which channels are active */