diff --git a/openbsc/src/utils/meas_vis.c b/openbsc/src/utils/meas_vis.c
index 092d6ad..4f7e632 100644
--- a/openbsc/src/utils/meas_vis.c
+++ b/openbsc/src/utils/meas_vis.c
@@ -115,6 +115,8 @@
 	default:
 		break;
 	}
+
+	return 0;
 }
 
 static int udp_fd_cb(struct osmo_fd *ofd, unsigned int what)