diff --git a/rfctime/rfc3339Nano.go b/rfctime/rfc3339Nano.go
index 8868dc8..f8df4c7 100644
--- a/rfctime/rfc3339Nano.go
+++ b/rfctime/rfc3339Nano.go
@@ -115,6 +115,8 @@ func (t RFC3339NanoTime) DecodeValue(dc bsoncodec.DecodeContext, vr bsonrw.Value
 		return err
 	}
 
+	val.Set(reflect.ValueOf(t))
+
 	return nil
 }