diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 116b03a4563608b00077707ae303106852374d8b..7aa1dc6d67c88f73067ff4be2ab6bf7ee204c9c1 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -11,10 +11,9 @@ endif
 $(srctree)/arch/x86/Makefile%: ;
 
 ifeq ($(CONFIG_X86_32),y)
+        UTS_MACHINE := i386
         include $(srctree)/arch/x86/Makefile_32
 else
+        UTS_MACHINE := x86_64
         include $(srctree)/arch/x86/Makefile_64
 endif
-
-
-