diff --git a/sgsn/SGSN_Tests.ttcn b/sgsn/SGSN_Tests.ttcn
index d96767a..281dcc9 100644
--- a/sgsn/SGSN_Tests.ttcn
+++ b/sgsn/SGSN_Tests.ttcn
@@ -661,6 +661,7 @@
 								key_sts := ?)) {
 				var IntegrityProtectionAlgorithm uia_chosen := 0; /* 0 = standard_UMTS_integrity_algorithm_UIA1 */
 				BSSAP.send(ts_RANAP_SecurityModeComplete(uia_chosen));
+				BSSAP.receive(tr_RANAP_CommonId(imsi_hex2oct(g_pars.imsi)))
 			}
 		}
 	} else {
@@ -2397,6 +2398,7 @@
 								key_sts := ?)) {
 			var IntegrityProtectionAlgorithm uia_chosen := 0; /* 0 = standard_UMTS_integrity_algorithm_UIA1 */
 			BSSAP.send(ts_RANAP_SecurityModeComplete(uia_chosen));
+			BSSAP.receive(tr_RANAP_CommonId(imsi_hex2oct(g_pars.imsi)))
 		}
 	[is_gb(ran_index)] BSSGP[ran_index].receive { repeat; }
 	[is_iu(ran_index)] BSSAP.receive { repeat; }