diff --git a/tests/mgcp/mgcp_test.c b/tests/mgcp/mgcp_test.c
index e6862e5..5bb7b27 100644
--- a/tests/mgcp/mgcp_test.c
+++ b/tests/mgcp/mgcp_test.c
@@ -634,6 +634,10 @@
 		dummy_packets += 1;
 	}
 
+	/* Make sure address+port are valid */
+	OSMO_ASSERT(dest_host);
+	OSMO_ASSERT(dest_port);
+
 	return len;
 }