diff --git a/library/L1CTL_PortType.ttcn b/library/L1CTL_PortType.ttcn
index 80fa074..e521730 100644
--- a/library/L1CTL_PortType.ttcn
+++ b/library/L1CTL_PortType.ttcn
@@ -17,6 +17,7 @@
 	import from Osmocom_Types all;
 	import from GSM_Types all;
 	import from GSM_RR_Types all;
+	import from GSM_RestOctets all;
 	import from L1CTL_PortType_CtrlFunct all;
 
 	type record L1CTL_connect {