diff --git a/common/coin_mvt.c b/common/coin_mvt.c
index c0ca08777..12d758f4d 100644
--- a/common/coin_mvt.c
+++ b/common/coin_mvt.c
@@ -376,8 +376,6 @@ struct coin_mvt *finalize_channel_mvt(const tal_t *ctx,
 	mvt->fees = tal(mvt, struct amount_msat);
 	*mvt->fees = chan_mvt->fees;
 	mvt->timestamp = timestamp;
-	/* channel movements don't have a blockheight */
-	mvt->blockheight = 0;
 	mvt->version = COIN_MVT_VERSION;
 	mvt->node_id = tal_dup(mvt, struct node_id, node_id);
 
diff --git a/common/coin_mvt.h b/common/coin_mvt.h
index 0995c9eda..c34f03792 100644
--- a/common/coin_mvt.h
+++ b/common/coin_mvt.h
@@ -74,8 +74,7 @@ struct chain_coin_mvt {
 	/* label / tag array */
 	enum mvt_tag *tags;
 
-	/* block this transaction is confirmed in
-	 * zero means it's unknown/unconfirmed */
+	/* block this transaction is confirmed in */
 	u32 blockheight;
 
 	/* only one or the other */
diff --git a/doc/PLUGINS.md b/doc/PLUGINS.md
index cc6d1ac0f..487a65349 100644
--- a/doc/PLUGINS.md
+++ b/doc/PLUGINS.md
@@ -713,7 +713,7 @@ i.e. only definitively resolved HTLCs or confirmed bitcoin transactions.
 		"output_count": 2, // ('chain_mvt' only, typically only channel closes)
 		"fees": "382msat", // ('channel_mvt' only)
 		"tags": ["deposit"],
-		"blockheight":102, // (May be null)
+		"blockheight":102, // 'chain_mvt' only
 		"timestamp":1585948198,
 		"coin_type":"bc"
 	}
diff --git a/lightningd/notification.c b/lightningd/notification.c
index c77fa24c4..983e9fc74 100644
--- a/lightningd/notification.c
+++ b/lightningd/notification.c
@@ -493,14 +493,9 @@ static void coin_movement_notification_serialize(struct json_stream *stream,
 		json_add_string(stream, NULL, mvt_tag_str(mvt->tags[i]));
 	json_array_end(stream);
 
-	/* Only chain movements have blockheights. A blockheight
-	 * of 'zero' means we haven't seen this tx confirmed yet. */
-	if (mvt->type == CHAIN_MVT) {
-		if (mvt->blockheight)
-			json_add_u32(stream, "blockheight", mvt->blockheight);
-		else
-			json_add_null(stream, "blockheight");
-	}
+	if (mvt->type == CHAIN_MVT)
+		json_add_u32(stream, "blockheight", mvt->blockheight);
+
 	json_add_u32(stream, "timestamp", mvt->timestamp);
 	json_add_string(stream, "coin_type", mvt->hrp_name);