diff --git a/Dockerfile b/Dockerfile
index 257ab926..0216fe5a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,6 @@
 FROM nginx:1.21-alpine as prod
 
 EXPOSE 4242
-ENV PORT "80"
 COPY . /usr/share/nginx/html/
 COPY app.conf /etc/nginx/nginx.conf
 
diff --git a/Makefile b/Makefile
index 119de786..5475649e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,2 +1,2 @@
 start:
-	docker build -f Dockerfile --target "prod" . -t "cardconjurer-client" && docker run -dit -h 127.0.0.1 -p 80:80 "cardconjurer-client"
+	docker build -f Dockerfile --target "prod" . -t "cardconjurer-client" && docker run -dit -h 127.0.0.1 -p 4242:4242 "cardconjurer-client"