diff --git a/Makefile b/Makefile
index 0418f63..eee4dcc 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 .PHONY: run install docker-build docker-run stop
 
 run: install
-	FLASK_ENV=development python app.py
+	FLASK_ENV=development PORT=9234 python3 app.py
 
 install:
 	pip3 install -r requirements.txt --quiet
@@ -10,7 +10,7 @@ docker-build:
 	docker build -t web-erika .
 
 docker-run: docker-build
-	docker run --rm -p 5000:5000 web-erika
+	docker run --rm -p 9234:9234 -e PORT=9234 web-erika
 
 stop:
 	@docker ps -q --filter name=web-erika | xargs -r docker stop