diff --git a/src/libsound/sound_alsa.c b/src/libsound/sound_alsa.c
index 4eca8a1..52f9029 100644
--- a/src/libsound/sound_alsa.c
+++ b/src/libsound/sound_alsa.c
@@ -515,6 +515,8 @@ int sound_get_tosend(void *inst, int buffer_size)
 	}
 
 	tosend = buffer_size - delay;
+	if (tosend < 0)
+		tosend = 0;
 	return tosend;
 }