diff --git a/pkg/logging/json_logger.go b/pkg/logging/json_logger.go
index 5c38bdd1492..73be699bb67 100644
--- a/pkg/logging/json_logger.go
+++ b/pkg/logging/json_logger.go
@@ -88,10 +88,9 @@ func (jsonLogger *JSONLogger) PreProcess(dataStore string, config *logging.Confi
 	l := &logrotate.Logger{
 		Filename: jsonFilePath,
 	}
-	//maxSize Defaults to unlimited.
-	var capVal int64
-	capVal = -1
+	//maxSize Defaults to 100MB.
 	if capacity, ok := jsonLogger.Opts[MaxSize]; ok {
+		var capVal int64
 		var err error
 		capVal, err = units.FromHumanSize(capacity)
 		if err != nil {
@@ -100,8 +99,8 @@ func (jsonLogger *JSONLogger) PreProcess(dataStore string, config *logging.Confi
 		if capVal <= 0 {
 			return fmt.Errorf("max-size must be a positive number")
 		}
+		l.MaxBytes = capVal
 	}
-	l.MaxBytes = capVal
 	maxFile := 1
 	if maxFileString, ok := jsonLogger.Opts[MaxFile]; ok {
 		var err error