diff --git a/sys/pc98/i386/machdep.c b/sys/pc98/i386/machdep.c
index b707d1ed0e09..d64ed5ab06d6 100644
--- a/sys/pc98/i386/machdep.c
+++ b/sys/pc98/i386/machdep.c
@@ -35,7 +35,7 @@
  * SUCH DAMAGE.
  *
  *	from: @(#)machdep.c	7.4 (Berkeley) 6/3/91
- *	$Id: machdep.c,v 1.85 1998/06/03 08:48:00 kato Exp $
+ *	$Id: machdep.c,v 1.86 1998/06/08 08:55:33 kato Exp $
  */
 
 #include "apm.h"
@@ -224,6 +224,9 @@ static vm_offset_t pager_sva, pager_eva;
 #ifdef NETISR
 extern struct linker_set netisr_set;
 #endif
+#if NNPX > 0
+extern struct isa_driver npxdriver;
+#endif
 
 #define offsetof(type, member)	((size_t)(&((type *)0)->member))
 
diff --git a/sys/pc98/pc98/machdep.c b/sys/pc98/pc98/machdep.c
index b707d1ed0e09..d64ed5ab06d6 100644
--- a/sys/pc98/pc98/machdep.c
+++ b/sys/pc98/pc98/machdep.c
@@ -35,7 +35,7 @@
  * SUCH DAMAGE.
  *
  *	from: @(#)machdep.c	7.4 (Berkeley) 6/3/91
- *	$Id: machdep.c,v 1.85 1998/06/03 08:48:00 kato Exp $
+ *	$Id: machdep.c,v 1.86 1998/06/08 08:55:33 kato Exp $
  */
 
 #include "apm.h"
@@ -224,6 +224,9 @@ static vm_offset_t pager_sva, pager_eva;
 #ifdef NETISR
 extern struct linker_set netisr_set;
 #endif
+#if NNPX > 0
+extern struct isa_driver npxdriver;
+#endif
 
 #define offsetof(type, member)	((size_t)(&((type *)0)->member))