diff --git a/sys/pc98/cbus/clock.c b/sys/pc98/cbus/clock.c
index f91939365b6..eb4b1e8e836 100644
--- a/sys/pc98/cbus/clock.c
+++ b/sys/pc98/cbus/clock.c
@@ -85,7 +85,6 @@
 #include <i386/isa/icu.h>
 #include <pc98/pc98/pc98.h>
 #include <pc98/pc98/pc98_machdep.h>
-#include <i386/isa/isa_device.h>
 #ifdef DEV_ISA
 #include <isa/isavar.h>
 #endif
diff --git a/sys/pc98/cbus/pcrtc.c b/sys/pc98/cbus/pcrtc.c
index f91939365b6..eb4b1e8e836 100644
--- a/sys/pc98/cbus/pcrtc.c
+++ b/sys/pc98/cbus/pcrtc.c
@@ -85,7 +85,6 @@
 #include <i386/isa/icu.h>
 #include <pc98/pc98/pc98.h>
 #include <pc98/pc98/pc98_machdep.h>
-#include <i386/isa/isa_device.h>
 #ifdef DEV_ISA
 #include <isa/isavar.h>
 #endif
diff --git a/sys/pc98/pc98/clock.c b/sys/pc98/pc98/clock.c
index f91939365b6..eb4b1e8e836 100644
--- a/sys/pc98/pc98/clock.c
+++ b/sys/pc98/pc98/clock.c
@@ -85,7 +85,6 @@
 #include <i386/isa/icu.h>
 #include <pc98/pc98/pc98.h>
 #include <pc98/pc98/pc98_machdep.h>
-#include <i386/isa/isa_device.h>
 #ifdef DEV_ISA
 #include <isa/isavar.h>
 #endif