diff --git a/quad9-doh.f b/quad9-doh
similarity index 98%
rename from quad9-doh.f
rename to quad9-doh
index 23f052e..4636494 100644
--- a/quad9-doh.f
+++ b/quad9-doh
@@ -9,4 +9,4 @@ add address=104.16.249.249 name=cloudflare-dns.com type=A
 /ip firewall nat
 add action=redirect chain=dstnat comment=DNS dst-port=53 protocol=udp \
     to-ports=53
-add action=redirect chain=dstnat dst-port=53 protocol=tcp to-ports=53
\ No newline at end of file
+add action=redirect chain=dstnat dst-port=53 protocol=tcp to-ports=53