diff --git a/usr.sbin/pcvt/vttest/main.c b/usr.sbin/pcvt/vttest/main.c
index 4093c579c71c..0a6aa832b63f 100644
--- a/usr.sbin/pcvt/vttest/main.c
+++ b/usr.sbin/pcvt/vttest/main.c
@@ -1909,7 +1909,7 @@ bye () {
 #ifdef UNIX
   stty(0,&sgttyOrg);
 #endif
-  exit();
+  exit(0);
 }
 
 #ifdef UNIX