diff --git a/src/arch/x86/include/arch/ioapic.h b/src/arch/x86/include/arch/ioapic.h
index 7ff47bb018..bb0a35e285 100644
--- a/src/arch/x86/include/arch/ioapic.h
+++ b/src/arch/x86/include/arch/ioapic.h
@@ -24,6 +24,9 @@
 #define IO_APIC_INTERRUPTS 24
 
 #ifndef __ACPI__
+
+#include <stdint.h>
+
 #define ALL		(0xff << 24)
 #define NONE		(0)
 #define DISABLED	(1 << 16)