diff --git a/library/GSMTAP_PortType.ttcn b/library/GSMTAP_PortType.ttcn
index 69074df..a3f655d 100644
--- a/library/GSMTAP_PortType.ttcn
+++ b/library/GSMTAP_PortType.ttcn
@@ -67,10 +67,12 @@
 		out GSMTAP_SendTo
 		in GSMTAP_RecvFrom
 		in ASP_Event
+		in ASP_ConnId_ReadyToRelease
 	} with { extension "user IPL4asp_PT
 		out(GSMTAP_Send -> ASP_Send: function(GSMTAP_to_IPL4_Send);
 		    GSMTAP_SendTo -> ASP_SendTo: function(GSMTAP_to_IPL4_SendTo))
 		in(ASP_RecvFrom -> GSMTAP_RecvFrom: function(IPL4_to_GSMTAP);
+		   ASP_ConnId_ReadyToRelease -> ASP_ConnId_ReadyToRelease: simple;
 		   ASP_Event -> ASP_Event: simple)" }
 
 }