--- msdos/dpmi.c.orig	Fri Feb 26 23:03:40 1999
+++ msdos/dpmi.c	Fri Feb 26 23:04:10 1999
@@ -20,6 +20,7 @@
 #include "process.h"
 #include "callback.h"
 #include "debug.h"
+#include "stackframe.h"
 
 #define DOS_GET_DRIVE(reg) ((reg) ? (reg) - 1 : DRIVE_GetCurrentDrive())
 
