diff --git a/bin/release b/bin/release
index 16aaf5f..e2b5a04 100755
--- a/bin/release
+++ b/bin/release
@@ -4,5 +4,5 @@ set -e
 cat << EOF
 ---
 default_process_types:
-  web: echo 's/<PORT>/${PORT}/g' && sed -i 's/<PORT>/${PORT}/g' /app/nginx.conf && /app/nginx/nginx -c /app/nginx.conf
+  web: echo 's/<PORT>/$PORT/g' && sed -i 's/<PORT>/$PORT/g' /app/nginx.conf && /app/nginx/nginx -c /app/nginx.conf
 EOF