diff --git a/openbsc/src/nat/bsc_nat.c b/openbsc/src/nat/bsc_nat.c
index 515278c..fb4c150 100644
--- a/openbsc/src/nat/bsc_nat.c
+++ b/openbsc/src/nat/bsc_nat.c
@@ -1279,6 +1279,12 @@
 		exit(1);
 	}
 
+	rc = bsc_ussd_init(nat);
+	if (rc != 0) {
+		LOGP(DNAT, LOGL_ERROR, "Failed to bind the USSD socket.\n");
+		exit(1);
+	}
+
 	signal(SIGABRT, &signal_handler);
 	signal(SIGUSR1, &signal_handler);
 	signal(SIGPIPE, SIG_IGN);