diff --git a/runtime/src/main.rs b/runtime/src/main.rs
index b8a8eba0..a66ee287 100644
--- a/runtime/src/main.rs
+++ b/runtime/src/main.rs
@@ -49,6 +49,7 @@ async fn main() {
     start_runtime_api();
     
     if is_dev() {
+        #[cfg(debug_assertions)]
         create_startup_env_file();
     } else {
         start_dotnet_server();