diff --git a/mgw/MGCP_Test.ttcn b/mgw/MGCP_Test.ttcn
index 4be034b..f6dfe57 100644
--- a/mgw/MGCP_Test.ttcn
+++ b/mgw/MGCP_Test.ttcn
@@ -732,6 +732,35 @@
 		setverdict(pass);
 	}
 
+	/* Test CRCX with X-Osmo-IGN, using same message as SYS#5063 to make sure it doesn't cause a crash. */
+	testcase TC_crcx_osmo_ign() runs on dummy_CT {
+		var template MgcpCommand cmd;
+		var MgcpResponse resp;
+		var MgcpEndpoint ep := "7@" & c_mgw_domain;
+		var MgcpCallId call_id := '3'H;
+
+		f_init(ep);
+
+		/* CRCX 1 7@mgw MGCP 1.0
+		C: 3
+		L: p:20, a:GSM-EFR, nt:IN
+		M: recvonly
+		X-Osmo-IGN: C
+		*/
+
+		cmd := ts_CRCX(get_next_trans_id(), ep, "netwtest", call_id);
+		cmd.params := {ts_MgcpParCallId(call_id),
+			       t_MgcpParLocConnOpt("p:20, a:GSM-EFR, nt:IN"),
+			       t_MgcpParConnMode("recvonly"),
+			       t_MgcpParOsmoIGN("C")};
+		resp := mgcp_transceive_mgw(cmd, tr_CRCX_ACK);
+		extract_conn_id(resp);
+
+		/* clean-up */
+		f_dlcx_ok(ep, call_id);
+		setverdict(pass);
+	}
+
 	/* test CRCX with early bi-directional mode, expect 527 as
 	 * bi-diretional media can only  be established once both local and
 	 * remote side are specified, see MGCP RFC */
@@ -2360,6 +2389,7 @@
 		execute(TC_crcx_no_lco());
 		execute(TC_crcx_noprefix());
 		execute(TC_crcx_unsupp_mode());
+		execute(TC_crcx_osmo_ign());
 		execute(TC_crcx_early_bidir_mode());
 		execute(TC_crcx_unsupp_param());
 		execute(TC_crcx_missing_callid());