diff --git a/advotracker/src/main.rs b/advotracker/src/main.rs
index 58b90f7..fc3e502 100644
--- a/advotracker/src/main.rs
+++ b/advotracker/src/main.rs
@@ -57,11 +57,11 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     use viperus::Viperus;
 
     let machine_kind = if cfg!(unix) {
-	"unix"
+        "unix"
     } else if cfg!(windows) {
-	"windows"
+        "windows"
     } else {
-	"unknown/unsupported"
+        "unknown/unsupported"
     };
 
     //use advotracker::callbacks::policy_check::is_valid;
@@ -82,9 +82,9 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     let span = tracing::span!(Level::TRACE, "advotracker");
     let _enter = span.enter();
     let subscriber = fmt::Subscriber::builder()
-	.with_env_filter(&log)
-	//.with_max_level(tracing::Level::DEBUG)
-	.finish();
+        .with_env_filter(&log)
+        //.with_max_level(tracing::Level::DEBUG)
+        .finish();
 
     tracing::subscriber::with_default(subscriber, || {
         // get system environment
@@ -94,6 +94,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         trace!(target: "advotracker", message = ?res, state = ?state);
         //debug!(message = ?res, state = ?state);
         trace!(target: "advotracker", environment = "system", lang = ?lang);
+        trace!(target: "advotracker", machine = ?&machine_kind);
 
         // testing environment: read from .env file
         dotenv().ok();