diff --git a/init/halt.c b/init/halt.c
index 4fac3a8..207069e 100644
--- a/init/halt.c
+++ b/init/halt.c
@@ -16,7 +16,7 @@
 #endif
 
 int halt_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int halt_main(int argc ATTRIBUTE_UNUSED, char **argv)
+int halt_main(int argc UNUSED_PARAM, char **argv)
 {
 	static const int magic[] = {
 #ifdef RB_HALT_SYSTEM