diff --git a/pcu/GPRS_Components.ttcn b/pcu/GPRS_Components.ttcn
index aaec6d3..849a251 100644
--- a/pcu/GPRS_Components.ttcn
+++ b/pcu/GPRS_Components.ttcn
@@ -1070,8 +1070,10 @@
 					t_imm_ass)) -> value data_msg {
 		rr_imm_ass := data_msg.rr_msg;
 		log("Rx Immediate Assignment: ", rr_imm_ass);
-		/* Send DATA.cnf back to the IUT (only needed for PCH) */
-		f_pcuif_tx_data_cnf(data_msg);
+		/* Send DATA.cnf back to the IUT */
+		if (ispresent(data_msg.confirm) and data_msg.confirm) {
+			f_pcuif_tx_data_cnf(data_msg);
+		}
 		setverdict(pass);
 	}
 }
@@ -1187,8 +1189,10 @@
 		f_shutdown(__BFILE__, __LINE__);
 	}
 
-	/* Send DATA.cnf back to the IUT (only needed for PCH) */
-	f_pcuif_tx_data_cnf(data_msg);
+	/* Send DATA.cnf back to the IUT */
+	if (ispresent(data_msg.confirm) and data_msg.confirm) {
+		f_pcuif_tx_data_cnf(data_msg);
+	}
 	return rr_pag_req1;
 }