diff --git a/reactos/hal/halx86/include/halirq.h b/reactos/hal/halx86/include/halirq.h
index 5304f5d1f6b..ba5f9533d22 100644
--- a/reactos/hal/halx86/include/halirq.h
+++ b/reactos/hal/halx86/include/halirq.h
@@ -8,6 +8,9 @@
 #define VECTOR2IRQ(vector)	((vector) - PRIMARY_VECTOR_BASE)
 #define VECTOR2IRQL(vector)	(PROFILE_LEVEL - VECTOR2IRQ(vector))
 #define IRQ2VECTOR(irq)		((irq) + PRIMARY_VECTOR_BASE)
+#define HalpVectorToIrq(vector)	((vector) - PRIMARY_VECTOR_BASE)
+#define HalpVectorToIrql(vector)	(PROFILE_LEVEL - VECTOR2IRQ(vector))
+#define HalpIrqToVector(irq)		((irq) + PRIMARY_VECTOR_BASE)
 #else
 
 UCHAR
@@ -27,3 +30,4 @@ HalpVectorToIrq(UCHAR Vector);
 #define IRQ2VECTOR(irq)		HalpIrqToVector(irq)
 
 #endif
+