diff --git a/biosdevname-pic.patch b/biosdevname-pic.patch
index 64fa9ca..a42750a 100644
--- a/biosdevname-pic.patch
+++ b/biosdevname-pic.patch
@@ -12,7 +12,7 @@ Index: biosdevname-0.6.1/src/bios_dev_name.c
 +#else
 +    	"push %%ebx\n"
 +#endif
-+        "xor %%ebx, %%ebx\n"
++        "xor %%ebx, %%ebx\n" /* not useful? ebx is overwritten by call? */
 +	"cpuid\n"
 +#ifdef __x86_64__
 +	"pop %%rbx\n"