diff --git a/src/system/kernel/arch/x86/apic.cpp b/src/system/kernel/arch/x86/apic.cpp
index 976ddfe1bc..5b220f25ad 100644
--- a/src/system/kernel/arch/x86/apic.cpp
+++ b/src/system/kernel/arch/x86/apic.cpp
@@ -13,6 +13,7 @@
 #include <arch/x86/msi.h>
 
 #include <debug.h>
+#include <kernel/cpu.h>
 #include <safemode.h>
 #include <vm/vm.h>
 #include <util/AutoLock.h>