diff --git a/include/asm-i386/alternative.h b/include/asm-i386/alternative.h
index 96adbabec7406fe2c285baad3629257ac8579702..bb3b6317c810205b3e8d8b3b3e47eb930797bf51 100644
--- a/include/asm-i386/alternative.h
+++ b/include/asm-i386/alternative.h
@@ -116,7 +116,7 @@ static inline void alternatives_smp_switch(int smp) {}
 		      "  .align 4\n"					\
 		      "  .long 661b\n"            /* label */		\
 		      "  .long 663f\n"		  /* new instruction */	\
-		      "  .byte 0x68\n"            /* X86_FEATURE_UP */	\
+		      "  .byte " __stringify(X86_FEATURE_UP) "\n"	\
 		      "  .byte 662b-661b\n"       /* sourcelen */	\
 		      "  .byte 664f-663f\n"       /* replacementlen */	\
 		      ".previous\n"					\
diff --git a/include/asm-x86_64/alternative.h b/include/asm-x86_64/alternative.h
index aa67bfd1b3ce63a73a4f29467d9e5a664bcc1190..709ad3f0d354dac4ceec6a1d881bfe08c350678e 100644
--- a/include/asm-x86_64/alternative.h
+++ b/include/asm-x86_64/alternative.h
@@ -4,6 +4,7 @@
 #ifdef __KERNEL__
 
 #include <linux/types.h>
+#include <asm/cpufeature.h>
 
 struct alt_instr {
 	u8 *instr; 		/* original instruction */
@@ -130,7 +131,7 @@ static inline void alternatives_smp_switch(int smp) {}
 		      "  .align 8\n"					\
 		      "  .quad 661b\n"            /* label */		\
 		      "  .quad 663f\n"		  /* new instruction */	\
-		      "  .byte 0x66\n"            /* X86_FEATURE_UP */	\
+		      "  .byte " __stringify(X86_FEATURE_UP) "\n"	\
 		      "  .byte 662b-661b\n"       /* sourcelen */	\
 		      "  .byte 664f-663f\n"       /* replacementlen */	\
 		      ".previous\n"					\