diff --git a/procps/sysctl.c b/procps/sysctl.c
index 1995382..3607a23 100644
--- a/procps/sysctl.c
+++ b/procps/sysctl.c
@@ -57,7 +57,7 @@
 };
 
 int sysctl_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int sysctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
+int sysctl_main(int argc UNUSED_PARAM, char **argv)
 {
 	int retval;
 	int opt;