diff --git a/vmmon-only/linux/hostif.c b/vmmon-only/linux/hostif.c
index f1f4b10..c43242f 100644
--- a/vmmon-only/linux/hostif.c
+++ b/vmmon-only/linux/hostif.c
@@ -55,6 +55,7 @@
 #include <linux/kthread.h>
 #include <linux/wait.h>
 
+#include <asm/apic.h>
 
 #include "vmware.h"
 #include "x86apic.h"