diff --git a/arch/x86/include/asm/irq_remapping.h b/arch/x86/include/asm/irq_remapping.h
index dcb0c723102855647693e7036684158ae61493d2..5fb9bbbd2f14c0ad07033b067797ed179e1d8fd8 100644
--- a/arch/x86/include/asm/irq_remapping.h
+++ b/arch/x86/include/asm/irq_remapping.h
@@ -22,11 +22,9 @@
 #ifndef __X86_IRQ_REMAPPING_H
 #define __X86_IRQ_REMAPPING_H
 
-#ifdef CONFIG_IRQ_REMAP
+#include <asm/io_apic.h>
 
-struct IO_APIC_route_entry;
-struct io_apic_irq_attr;
-struct pci_dev;
+#ifdef CONFIG_IRQ_REMAP
 
 extern int irq_remapping_enabled;