diff --git a/library/BSSAP_LE_Types.ttcn b/library/BSSAP_LE_Types.ttcn
index ae7385b3d..604fbe01b 100644
--- a/library/BSSAP_LE_Types.ttcn
+++ b/library/BSSAP_LE_Types.ttcn
@@ -34,7 +34,7 @@ type enumerated BSSMAP_LE_MsgType {
 
 	BSSMAP_LE_RESET			('00110000'B),
 	BSSMAP_LE_RESET_ACK		('00110001'B)
-};
+} with { variant "FIELDLENGTH(8)" };
 
 /* TS 49.031 Section 10.2 */
 type enumerated BSSMAP_LE_IEI {
@@ -78,7 +78,7 @@ type enumerated BSSMAP_LE_IEI {
 	BSSMAP_LE_IEI_SHORT_ID		('10001110'B),
 	BSSMAP_LE_IEI_COVERAGE_CLASS	('10001111'B),
 	BSSMAP_LE_IEI_MTA_ACC_SEC_RQD	('10010000'B)
-};
+} with { variant "FIELDLENGTH(8)" };
 
 /* Section 9.1 */
 type record BSSMAP_LE_PerfLocReq {