diff --git a/src/ibm.h b/src/ibm.h
index 5bf9f4c..4d7cc59 100644
--- a/src/ibm.h
+++ b/src/ibm.h
@@ -448,7 +448,7 @@ float VGACONST1,VGACONST2;
 float RTCCONST;
 int gated,speakval,speakon;
 
-#define SOUNDBUFLEN (48000/10)
+#define SOUNDBUFLEN (48000/40)
 
 
 /*Sound Blaster*/