diff --git a/logtr/log.go b/logtr/log.go
index 1daa32b..e6b56cd 100644
--- a/logtr/log.go
+++ b/logtr/log.go
@@ -82,7 +82,7 @@ func SetLevel(l Level) {
 }
 
 func logf(l Level, format string, args []interface{}) {
-	format = fmt.Sprintf("%v: %v: %s\n", time.Now().Format("15:04:05"), l.String(), strings.TrimSpace(format))
+	format = fmt.Sprintf("%v: %v: %s\n", time.Now().Format("01-02T15:04:05"), l.String(), strings.TrimSpace(format))
 	cLevel := level
 	cAnsoser := ansoser
 	if l >= cLevel {