diff --git a/polymer/eduke32/source/sounds.c b/polymer/eduke32/source/sounds.c
index fa3d2497f..07fdfdfd8 100644
--- a/polymer/eduke32/source/sounds.c
+++ b/polymer/eduke32/source/sounds.c
@@ -512,17 +512,23 @@ void sound(int num)
 int spritesound(unsigned int num, int i)
 {
     if (num >= MAXSOUNDS) return -1;
+	if (i < 0)
+	{
+		sound(num);
+		return 0;
+	}
     return xyzsound(num,i,SX,SY,SZ);
 }
 
 void stopspritesound(int num, int i)
 {
     UNREFERENCED_PARAMETER(i);
-    stopsound(num);
+	if (num >= 0 && num < MAXSOUNDS) stopsound(num);
 }
 
 void stopsound(int num)
 {
+	if (num >= 0 && num < MAXSOUNDS)
     if (g_sounds[num].num > 0)
     {
         FX_StopSound(g_sounds[num].SoundOwner[g_sounds[num].num-1].voice);
@@ -534,6 +540,7 @@ void stopenvsound(int num,int i)
 {
     int j, k;
 
+	if (num >= 0 && num < MAXSOUNDS)
     if (g_sounds[num].num > 0)
     {
         k = g_sounds[num].num;