diff --git a/tools/regression/netinet/tcpconnect/tcpconnect.c b/tools/regression/netinet/tcpconnect/tcpconnect.c
index 5738e63bee49..cf42dc8dc4d5 100644
--- a/tools/regression/netinet/tcpconnect/tcpconnect.c
+++ b/tools/regression/netinet/tcpconnect/tcpconnect.c
@@ -39,7 +39,7 @@
 #include <unistd.h>
 
 static void
-usage(volid)
+usage(void)
 {
 
 	fprintf(stderr, "tcpconnect server port\n");