diff --git a/biosdevname-pic.patch b/biosdevname-pic.patch
index 7b292e3..64fa9ca 100644
--- a/biosdevname-pic.patch
+++ b/biosdevname-pic.patch
@@ -7,14 +7,14 @@ Index: biosdevname-0.6.1/src/bios_dev_name.c
  {
      asm volatile (
 -        "xor %%ebx, %%ebx; cpuid"
-+#ifdef x86_64
++#ifdef __x86_64__
 +    	"push %%rbx\n"
 +#else
 +    	"push %%ebx\n"
 +#endif
 +        "xor %%ebx, %%ebx\n"
 +	"cpuid\n"
-+#ifdef x86_64
++#ifdef __x86_64__
 +	"pop %%rbx\n"
 +#else
 +	"pop %%ebx\n"