diff --git a/sys/arm64/arm64/gic_v3_var.h b/sys/arm64/arm64/gic_v3_var.h
--- a/sys/arm64/arm64/gic_v3_var.h
+++ b/sys/arm64/arm64/gic_v3_var.h
@@ -110,7 +110,7 @@
 
 /* ivars */
 enum {
-	GICV3_IVAR_NIRQS = BUS_IVARS_GICV3,
+	GICV3_IVAR_NIRQS = BUS_IVARS_PRIVATE,
 	GICV3_IVAR_REDIST,
 	GICV3_IVAR_FLAGS,
 };
diff --git a/sys/sys/bus.h b/sys/sys/bus.h
--- a/sys/sys/bus.h
+++ b/sys/sys/bus.h
@@ -309,7 +309,6 @@
 #define	BUS_IVARS_PRIVATE	0x0	/* private variables */
 #define	BUS_IVARS_ACPI		0x100
 #define	BUS_IVARS_GIC		500
-#define	BUS_IVARS_GICV3		1000
 #define	BUS_IVARS_GPIOBUS	10500
 #define	BUS_IVARS_SUPERIO	10600