diff --git a/Dockerfile b/Dockerfile
index db51c753..e3acddb7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,5 +5,5 @@ RUN mkdir /var/oj
 COPY . /var/oj/
 WORKDIR /var/oj/
 RUN pip install -r requirements.txt
-EXPOSE: 8080
+EXPOSE 8080
 RUN python manage,py runserver 8080