diff --git a/client.go b/client.go
index 6974a0e..a114bd3 100644
--- a/client.go
+++ b/client.go
@@ -60,6 +60,7 @@ func setClientBusy(userID64 int64, from time.Time, duration time.Duration) error
 			clt.CWIdle = false
 			clt.CWBusyUntil = from.UTC().Add(duration)
 			clt.Mux.Unlock()
+			log.Printf("setClientBusy[%s] : set for %s.\n", clt.Login, duration.String())
 			return nil
 		} else {
 			return errors.New("Client not found.")
@@ -69,15 +70,15 @@ func setClientBusy(userID64 int64, from time.Time, duration time.Duration) error
 }
 
 func setClientIdle(userID64 int64, from time.Time) error {
-	fmt.Printf("setClientIdle : starting for %d.\n", userID64)
 	if clt, ok := getLockedClient(userID64, false); ok {
 		if from.UTC().After(clt.CWLastUpdate.UTC()) {
 			fmt.Printf("setClientIdle : updated.\n")
 			clt.CWBusyUntil = from
 			clt.CWIdle = true
 			clt.CWLastUpdate = from
+			log.Printf("setClientIdle[%s] : updated.\n", clt.Login)
 		} else {
-			fmt.Printf("setClientIdle : not updated.\n")
+			log.Printf("setClientIdle[%s] : not updated.\n", clt.Login)
 		}
 		clt.Mux.Unlock()
 		return nil