diff --git a/sys/pc98/cbus/clock.c b/sys/pc98/cbus/clock.c
index 979a3a0369e9..1bc70b09887c 100644
--- a/sys/pc98/cbus/clock.c
+++ b/sys/pc98/cbus/clock.c
@@ -70,6 +70,7 @@
 #include <sys/power.h>
 
 #include <machine/clock.h>
+#include <machine/cpu.h>
 #include <machine/cputypes.h>
 #include <machine/frame.h>
 #include <machine/intr_machdep.h>
diff --git a/sys/pc98/cbus/pcrtc.c b/sys/pc98/cbus/pcrtc.c
index 979a3a0369e9..1bc70b09887c 100644
--- a/sys/pc98/cbus/pcrtc.c
+++ b/sys/pc98/cbus/pcrtc.c
@@ -70,6 +70,7 @@
 #include <sys/power.h>
 
 #include <machine/clock.h>
+#include <machine/cpu.h>
 #include <machine/cputypes.h>
 #include <machine/frame.h>
 #include <machine/intr_machdep.h>