diff --git a/lazy.go b/lazy.go
index 7fe33ad..6677270 100644
--- a/lazy.go
+++ b/lazy.go
@@ -104,9 +104,7 @@ func RandomGenerate(m Config) (*Mock, error) {
 				switch field.Type {
 				case reflect.TypeOf(sql.NullTime{}):
 					var temp sql.NullTime
-					if isNull() {
-						temp.Valid = false
-					} else {
+					if !isNull() {
 						temp.Valid = true
 						temp.Time = time.Now()
 					}