diff --git a/TS_103_280.asn1 b/TS_103_280.asn1
index 68cfe54e9a3e75ef0565bd50cd1c0d4bdbc8793f..c3c0292edd38fe986076db157cab665ed29eae89 100644
--- a/TS_103_280.asn1
+++ b/TS_103_280.asn1
@@ -65,6 +65,8 @@ WGS84LongitudeAngular ::= OCTET STRING (SIZE (11))
 
 InternationalE164 ::= NumericString (SIZE(1..15))
 
+NationalE164 ::= NumericString (SIZE(1..14))
+
 IMSI ::= NumericString (SIZE(6..15))
 
 IMEI ::= NumericString (SIZE(14))