--- sbdsp.c.orig	Sun Mar 21 19:32:05 1999
+++ sbdsp.c	Sun Mar 21 19:32:48 1999
@@ -17,6 +17,7 @@
  */
 
 #include <sys/types.h>
+#include <sys/ioctl.h>
 #ifdef SBLAST
 #include <i386/isa/sblast.h>
 #else