diff --git a/sys/amd64/amd64/intr_machdep.c b/sys/amd64/amd64/intr_machdep.c
index 44956383405..6bc2f7da0b8 100644
--- a/sys/amd64/amd64/intr_machdep.c
+++ b/sys/amd64/amd64/intr_machdep.c
@@ -52,6 +52,8 @@
 #include <sys/systm.h>
 #include <machine/clock.h>
 #include <machine/intr_machdep.h>
+#include <machine/segments.h>
+#include <amd64/isa/isa.h>
 #ifdef DDB
 #include <ddb/ddb.h>
 #endif