diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c
index 4bc5d7df..3bc34b61 100644
--- a/arch/x86/kernel/apic.c
+++ b/arch/x86/kernel/apic.c
@@ -27,6 +27,7 @@
 #include <metalsvm/init.h>
 #include <metalsvm/page.h>
 #include <metalsvm/spinlock.h>
+#include <metalsvm/mmu.h>
 #include <asm/irq.h>
 #include <asm/irqflags.h>
 #include <asm/apic.h>