diff --git a/channeld/channeld.c b/channeld/channeld.c
index 4ded3024f8c4..01a7df49d406 100644
--- a/channeld/channeld.c
+++ b/channeld/channeld.c
@@ -4377,6 +4377,7 @@ static void splice_accepter(struct peer *peer, const u8 *inmsg)
 	peer->splicing->accepter_relative = 0;
 
 	if (type == WIRE_SPLICE_INIT) {
+		/* Same fixed local funding_pubkey as splice_init - see the comment there */
 		msg = towire_splice_ack(NULL,
 					&peer->channel_id,
 					peer->splicing->accepter_relative,
@@ -5031,6 +5032,9 @@ static void handle_splice_stfu_success(struct peer *peer)
 	u8 *msg;
 	struct tlv_tx_init_rbf_tlvs *init_rbf_tlvs;
 	if (!last_inflight(peer)) {
+		/* We only support the peer rotating their funding pubkey
+		 * (see remote_funding_pubkey) - our own funding_pubkey is
+		 * fixed for the channel's lifetime and is never rederived here */
 		msg = towire_splice_init(tmpctx,
 					 &peer->channel_id,
 					 peer->splicing->opener_relative,
diff --git a/channeld/splice.h b/channeld/splice.h
index 47050aee041b..3a640443f731 100644
--- a/channeld/splice.h
+++ b/channeld/splice.h
@@ -31,7 +31,8 @@ struct splice_state *splice_state_new(const tal_t *ctx);
 /* An active splice negotiation. Born when splice beings and dies when a splice
  * negotation has finished */
 struct splicing {
-	/* The remote side's rotated funding pubkey */
+	/* The remote side's rotated funding pubkey. There is no local counterpart - we always reuse channel->funding_pubkey[LOCAL],
+	 * which is fixed for the channel's lifetime. Local funding pubkey rotation is not implemented */
 	struct pubkey remote_funding_pubkey;
 	/* The opener side's relative balance change */
 	s64 opener_relative;