diff --git a/auto/help b/auto/help
index 98c877fb..4d0b84e9 100644
--- a/auto/help
+++ b/auto/help
@@ -33,6 +33,8 @@ cat << END
   --no-ipv6            disable IPv6 support
   --no-unix-sockets    disable Unix domain sockets support
 
+  --openssl            enable OpenSSL library usage
+
   --debug              enable debug logging