diff --git a/Dockerfile b/Dockerfile
index f1528fb..9e75108 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -22,5 +22,5 @@ ENV SERVER_MODE="https" \
     HSTS="true" \
     HTTP_REDIRECT_ADDR=":8080" \
     HTTP_REDIRECT_ENABLED="true"
-EXPOSE 8080,8443
+EXPOSE 8080 8443
 CMD ["/app/app"]