diff --git a/sys/i386/include/specialreg.h b/sys/i386/include/specialreg.h
index 1c6ebe103c6..cfd1ed3daff 100644
--- a/sys/i386/include/specialreg.h
+++ b/sys/i386/include/specialreg.h
@@ -108,7 +108,7 @@
 #define	CPUID_SS	0x08000000
 #define	CPUID_HTT	0x10000000
 #define	CPUID_TM	0x20000000
-#define	CPUID_B30	0x40000000
+#define	CPUID_IA64	0x40000000
 #define	CPUID_PBE	0x80000000
 
 /*