diff --git a/openbsc/src/gprs/gb_proxy_main.c b/openbsc/src/gprs/gb_proxy_main.c
index 0054b78..72f1417 100644
--- a/openbsc/src/gprs/gb_proxy_main.c
+++ b/openbsc/src/gprs/gb_proxy_main.c
@@ -118,6 +118,7 @@
 		exit(1);
 	}
 	gbcfg.nsi = gbprox_nsi;
+	register_signal_handler(SS_NS, &gbprox_signal, NULL);
 	nsip_listen(gbprox_nsi, gbcfg.nsip_listen_port);
 
 	/* 'establish' the outgoing connection to the SGSN */