diff --git a/Dockerfile b/Dockerfile
index 490e008..a06d6d5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
 FROM nginx:alpine
 RUN sed -i 's/#gzip/gzip/g' /etc/nginx/nginx.conf && \
-    sed -i '/gzip *on/ a gzip_types text/css application/javascript' /etc/nginx/nginx.conf
+    sed -i '/gzip *on/ a gzip_types text/css application/javascript;' /etc/nginx/nginx.conf
 COPY . /usr/share/nginx/html