diff --git a/openbsc/src/osmo-bsc_nat/bsc_nat.c b/openbsc/src/osmo-bsc_nat/bsc_nat.c
index 954cf1f..0d0fd58 100644
--- a/openbsc/src/osmo-bsc_nat/bsc_nat.c
+++ b/openbsc/src/osmo-bsc_nat/bsc_nat.c
@@ -916,7 +916,7 @@
 
 	if (connection->pending_msg) {
 		LOGP(DNAT, LOGL_ERROR, "Dropping partial message on connection %d.\n",
-		     connection->cfg->nr);
+		     connection->cfg ? connection->cfg->nr : -1);
 		msgb_free(connection->pending_msg);
 		connection->pending_msg = NULL;
 	}