diff --git a/include/asm-x86_64/irqflags.h b/include/asm-x86_64/irqflags.h
index cce6937..86e70fe 100644
--- a/include/asm-x86_64/irqflags.h
+++ b/include/asm-x86_64/irqflags.h
@@ -9,6 +9,7 @@
  */
 #ifndef _ASM_IRQFLAGS_H
 #define _ASM_IRQFLAGS_H
+#include <asm/processor-flags.h>
 
 #ifndef __ASSEMBLY__
 /*
@@ -53,19 +54,19 @@
 {
 	unsigned long flags = __raw_local_save_flags();
 
-	raw_local_irq_restore((flags & ~(1 << 9)) | (1 << 18));
+	raw_local_irq_restore((flags & ~X86_EFLAGS_IF) | X86_EFLAGS_AC);
 }
 
 static inline void raw_local_irq_enable(void)
 {
 	unsigned long flags = __raw_local_save_flags();
 
-	raw_local_irq_restore((flags | (1 << 9)) & ~(1 << 18));
+	raw_local_irq_restore((flags | X86_EFLAGS_IF) & (~X86_EFLAGS_AC));
 }
 
 static inline int raw_irqs_disabled_flags(unsigned long flags)
 {
-	return !(flags & (1<<9)) || (flags & (1 << 18));
+	return !(flags & X86_EFLAGS_IF) || (flags & X86_EFLAGS_AC);
 }
 
 #else /* CONFIG_X86_VSMP */
@@ -82,7 +83,7 @@
 
 static inline int raw_irqs_disabled_flags(unsigned long flags)
 {
-	return !(flags & (1 << 9));
+	return !(flags & X86_EFLAGS_IF);
 }
 
 #endif