diff --git a/datetime.go b/datetime.go
index b643c8c..755d30a 100644
--- a/datetime.go
+++ b/datetime.go
@@ -36,5 +36,5 @@ func (dt DateTime) Value() time.Time {
 // String satisfies the fmt.Stringer interface for the DateTime type
 // The date will returned as time.RFC3339 format
 func (dt DateTime) String() string {
-	return dt.dv.Format(time.RFC3339)
+	return dt.Value().Format(time.RFC3339)
 }