diff --git a/log/logger.go b/log/logger.go
index 955a2abc0..a1c0219f0 100644
--- a/log/logger.go
+++ b/log/logger.go
@@ -32,6 +32,9 @@ func NewNullLogger() *Logger {
 
 // New creates a new logger.
 func New(logger *logrus.Logger, iterID string) *Logger {
+	if logger == nil {
+		logger = logrus.New()
+	}
 	return &Logger{
 		Logger: logger,
 		iterID: iterID,
@@ -87,10 +90,6 @@ func (l *Logger) Logf(level logrus.Level, category string, msg string, args ...a
 	if l.categoryFilter != nil && !l.categoryFilter.MatchString(category) {
 		return
 	}
-	if l.Logger == nil {
-		fmt.Printf("%s [%d]: %s - %d ms\n", category, goRoutineID(), string(msg), elapsed)
-		return
-	}
 	fields := logrus.Fields{
 		"category":  category,
 		"elapsed":   fmt.Sprintf("%d ms", elapsed),