diff --git a/pool.js b/pool.js
index 24d852f..c4dccca 100644
--- a/pool.js
+++ b/pool.js
@@ -116,7 +116,7 @@ function do_call(calls) {
 
 function update_pump(temp, max, time) {
   status.tick_pump++;
-  print("[POOL] update_pump", status.tick_pump, temp, max, time);
+  print("[POOL] update_pump", status.tick_pump, "- temp:", temp, "max:", max, "time:", time);
 
   let duration = compute_duration_filt(max);
   let schedule = compute_schedule_filt(duration);