diff --git a/Dockerfile_full_s6 b/Dockerfile_full_s6
index 3bee5cc..e384d82 100644
--- a/Dockerfile_full_s6
+++ b/Dockerfile_full_s6
@@ -1,4 +1,4 @@
-FROM rustdesk/rustdesk-server-s6:latest as server
+FROM rustdesk/rustdesk-server-s6:latest AS server
 
 FROM alpine