diff --git a/include/osmocom/smlc/lb_peer.h b/include/osmocom/smlc/lb_peer.h
index b5ac6d6..7eabe4d 100644
--- a/include/osmocom/smlc/lb_peer.h
+++ b/include/osmocom/smlc/lb_peer.h
@@ -60,7 +60,7 @@ struct lb_peer_ev_ctx {
 };
 
 struct lb_peer *lb_peer_find_or_create(struct sccp_lb_inst *sli, const struct osmo_sccp_addr *peer_addr);
-struct lb_peer *lb_peer_find(struct sccp_lb_inst *sli, const struct osmo_sccp_addr *peer_addr);
+struct lb_peer *lb_peer_find(const struct sccp_lb_inst *sli, const struct osmo_sccp_addr *peer_addr);
 
 int lb_peer_up_l2(struct sccp_lb_inst *sli, const struct osmo_sccp_addr *calling_addr, bool co, uint32_t conn_id,
 		  struct msgb *l2);
diff --git a/src/osmo-smlc/lb_peer.c b/src/osmo-smlc/lb_peer.c
index 5206628..f2dc715 100644
--- a/src/osmo-smlc/lb_peer.c
+++ b/src/osmo-smlc/lb_peer.c
@@ -69,7 +69,7 @@ struct lb_peer *lb_peer_find_or_create(struct sccp_lb_inst *sli, const struct os
 	return lb_peer_alloc(sli, peer_addr);
 }
 
-struct lb_peer *lb_peer_find(struct sccp_lb_inst *sli, const struct osmo_sccp_addr *peer_addr)
+struct lb_peer *lb_peer_find(const struct sccp_lb_inst *sli, const struct osmo_sccp_addr *peer_addr)
 {
 	struct lb_peer *lbp;
 	llist_for_each_entry(lbp, &sli->lb_peers, entry) {