diff --git a/bitcoin/base58.c b/bitcoin/base58.c
index 70f2689cd..28d3db746 100644
--- a/bitcoin/base58.c
+++ b/bitcoin/base58.c
@@ -24,13 +24,12 @@ static char *to_base58(const tal_t *ctx, u8 version,
 	buf[0] = version;
 	memcpy(buf + 1, rmd, sizeof(*rmd));
 
-	if (wally_base58_from_bytes((const unsigned char *) buf, total_length, BASE58_FLAG_CHECKSUM, &out) != WALLY_OK) {
-		return NULL;
-	}else{
-		char *res = tal_strdup(ctx, out);
-		wally_free_string(out);
-		return res;
-	}
+	if (wally_base58_from_bytes((const unsigned char *) buf,
+				    total_length, BASE58_FLAG_CHECKSUM, &out)
+	    != WALLY_OK)
+		out = NULL;
+
+	return tal_steal(ctx, out);
 }
 
 char *bitcoin_to_base58(const tal_t *ctx, const struct chainparams *chainparams,
diff --git a/bitcoin/psbt.c b/bitcoin/psbt.c
index 1551e198a..d9d48689c 100644
--- a/bitcoin/psbt.c
+++ b/bitcoin/psbt.c
@@ -645,15 +645,13 @@ struct wally_psbt *psbt_from_b64(const tal_t *ctx,
 
 char *psbt_to_b64(const tal_t *ctx, const struct wally_psbt *psbt)
 {
-	char *serialized_psbt, *ret_val;
+	char *serialized_psbt;
 	int ret;
 
 	ret = wally_psbt_to_base64(psbt, 0, &serialized_psbt);
 	assert(ret == WALLY_OK);
 
-	ret_val = tal_strdup(ctx, serialized_psbt);
-	wally_free_string(serialized_psbt);
-	return ret_val;
+	return tal_steal(ctx, serialized_psbt);
 }
 REGISTER_TYPE_TO_STRING(wally_psbt, psbt_to_b64);