1 files changed, 1 insertions, 1 deletions

diff --git a/plugins/check_pgsql.c b/plugins/check_pgsql.c
index 69edae75..8b0769f1 100644
--- a/plugins/check_pgsql.c
+++ b/plugins/check_pgsql.c
@@ -475,6 +475,6 @@ void
 print_usage (void)
 {
         printf ("%s\n", _("Usage:"));
-        printf ("%s [-H <host>] [-P <port>] [-c <critical time>] [-w <warning time>]\n", progname);
+        printf ("%s [-H <host>] [-4|-6] [-P <port>] [-c <critical time>] [-w <warning time>]\n", progname);
         printf (" [-t <timeout>] [-d <database>] [-l <logname>] [-p <password>]\n");
 }