diff --git a/lightningd/txfilter.c b/lightningd/txfilter.c
index 117e877d2..77997023b 100644
--- a/lightningd/txfilter.c
+++ b/lightningd/txfilter.c
@@ -17,7 +17,7 @@ struct txfilter *txfilter_new(const tal_t *ctx)
 	return filter;
 }
 
-static void txfilter_add_scriptpubkey(struct txfilter *filter, u8 *script)
+void txfilter_add_scriptpubkey(struct txfilter *filter, u8 *script)
 {
 	size_t count = tal_count(filter->scriptpubkeys);
 	tal_resize(&filter->scriptpubkeys, count + 1);
diff --git a/lightningd/txfilter.h b/lightningd/txfilter.h
index 9dc14ea97..a30f0f76a 100644
--- a/lightningd/txfilter.h
+++ b/lightningd/txfilter.h
@@ -28,4 +28,9 @@ void txfilter_add_derkey(struct txfilter *filter, u8 derkey[PUBKEY_DER_LEN]);
  */
 bool txfilter_match(const struct txfilter *filter, const struct bitcoin_tx *tx);
 
+/**
+ * txfilter_add_scriptpubkey -- Add a serialized scriptpubkey to the filter
+ */
+void txfilter_add_scriptpubkey(struct txfilter *filter, u8 *script);
+
 #endif /* LIGHTNING_LIGHTNINGD_TXFILTER_H */