diff --git a/5_optional b/5_optional.sh
similarity index 99%
rename from 5_optional
rename to 5_optional.sh
index 96fe025..fdf452c 100644
--- a/5_optional
+++ b/5_optional.sh
@@ -1,4 +1,3 @@
-
 sudo ufw allow 21115/tcp 21116/tcp 21116/udp 21117/tcp 21118/tcp 21119/tcp