diff --git a/tools/regression/sockets/unix_socket/Makefile b/tools/regression/sockets/unix_socket/Makefile
index 40f6b92e952..bb6045637ed 100644
--- a/tools/regression/sockets/unix_socket/Makefile
+++ b/tools/regression/sockets/unix_socket/Makefile
@@ -2,6 +2,6 @@
 
 PROG=	unix_socket
 MAN=
-WARNS?=	3
+WARNS?=	6
 
 .include <bsd.prog.mk>
diff --git a/tools/regression/sockets/unix_socket/unix_socket.c b/tools/regression/sockets/unix_socket/unix_socket.c
index 24b6baf8ee7..085366fb49c 100644
--- a/tools/regression/sockets/unix_socket/unix_socket.c
+++ b/tools/regression/sockets/unix_socket/unix_socket.c
@@ -40,7 +40,7 @@
 #include <unistd.h>
 
 int
-main(int argc, char *argv[])
+main(void)
 {
 	int sock, socks[2];