diff --git a/proc/sysinfo.c b/proc/sysinfo.c
index 5e224f12..1c7c2798 100644
--- a/proc/sysinfo.c
+++ b/proc/sysinfo.c
@@ -253,11 +253,13 @@ static void init_libproc(void){
 
   cpuinfo();
 
+#ifdef __linux__
   if(linux_version_code > LINUX_VERSION(2, 4, 0)){ 
     Hertz = find_elf_note(AT_CLKTCK);
     if(Hertz!=NOTE_NOT_FOUND) return;
     fputs("2.4+ kernel w/o ELF notes? -- report this\n", stderr);
   }
+#endif /* __linux __ */
   old_Hertz_hack();
 }