diff --git a/docker/Dockerfile b/docker/Dockerfile
index c109c90..d038460 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,12 +1,12 @@
 FROM ubuntu:latest
 
-ENV METHOD "aes-256-cfb"
-ENV KEY "Change Me!"
+ENV METHOD aes-256-cfb
+ENV KEY Change Me!
 
 ENV PORT 8388
 EXPOSE $PORT
 
-CMD ssserver -p $PORT -m "$METHOD" -k "$KEY"
+CMD ssserver -p "$PORT" -m "$METHOD" -k "$KEY"
 
 RUN apt-get update
 RUN apt-get install -y python-pip