diff --git a/pcu/PCUIF_Components.ttcn b/pcu/PCUIF_Components.ttcn
index a18c774..01638b1 100644
--- a/pcu/PCUIF_Components.ttcn
+++ b/pcu/PCUIF_Components.ttcn
@@ -143,7 +143,7 @@
 	OCT4		msg_id optional,
 	charstring	imsi optional,
 	GsmRrMessage	rr_msg,
-	boolean		confirm
+	boolean		confirm optional
 };
 template BTS_PDTCH_Block tr_PCUIF_DATA_PDTCH(template uint8_t bts_nr,
 					    template PCUIF_data raw,
@@ -568,6 +568,7 @@
 			pcu_msg_rr.msg_id := omit;
 			pcu_msg_rr.imsi := omit;
 			pcu_msg_rr.rr_msg := dec_GsmRrMessage(data);
+			pcu_msg_rr.confirm := omit;
 		}
 		TC.send(pcu_msg_rr);
 		repeat;