diff --git a/vlib/vweb/vweb.v b/vlib/vweb/vweb.v
index fd7b4ff564..096ec1ca1e 100644
--- a/vlib/vweb/vweb.v
+++ b/vlib/vweb/vweb.v
@@ -536,25 +536,24 @@ pub fn run_at[T](global_app &T, params RunParams) ! {
 		return error('invalid nr_workers `${params.nr_workers}`, it should be above 0')
 	}
 
-	listen_address := '${params.host}:${params.port}'
+	routes := generate_routes(global_app)!
+	controllers_sorted := check_duplicate_routes_in_controllers[T](global_app, routes)!
+
+	host := if params.host == '' { 'localhost' } else { params.host }
+	listen_address := '${host}:${params.port}'
+	if params.show_startup_message {
+		if params.startup_message == '' {
+			println('[Vweb] Running app on http://${listen_address}/')
+		} else {
+			println(params.startup_message)
+		}
+	}
 	mut l := net.listen_tcp(params.family, listen_address) or {
 		ecode := err.code()
 		return error('failed to listen ${ecode} ${err}')
 	}
 	// eprintln('>> vweb listen_address: `${listen_address}` | params.family: ${params.family} | l.addr: ${l.addr()} | params: $params')
 
-	routes := generate_routes(global_app)!
-	controllers_sorted := check_duplicate_routes_in_controllers[T](global_app, routes)!
-
-	if params.show_startup_message {
-		if params.startup_message == '' {
-			host := if params.host == '' { 'localhost' } else { params.host }
-			println('[Vweb] Running app on http://${host}:${params.port}/')
-		} else {
-			println(params.startup_message)
-		}
-	}
-
 	ch := chan &RequestParams{cap: params.pool_channel_slots}
 	mut ws := []thread{cap: params.nr_workers}
 	for worker_number in 0 .. params.nr_workers {