diff --git a/library/IPA_Types.ttcn b/library/IPA_Types.ttcn
index e232aeb..ce6f9b6 100644
--- a/library/IPA_Types.ttcn
+++ b/library/IPA_Types.ttcn
@@ -86,7 +86,7 @@
 	IPAC_IDTAG_SWVERSION	('05'H),
 	IPAC_IDTAG_IPADDR	('06'H),
 	IPAC_IDTAG_MACADDR	('07'H),
-	IPAC_IDTAG_UNIT		('08'H),
+	IPAC_IDTAG_UNITID	('08'H),
 	IPAC_IDTAG_OSMO_RAND	('23'H)
 } with { variant "FIELDLENGTH(8)" }