diff --git a/liana-gui/src/backup.rs b/liana-gui/src/backup.rs
index df4894f9..ddea022e 100644
--- a/liana-gui/src/backup.rs
+++ b/liana-gui/src/backup.rs
@@ -236,7 +236,7 @@ impl Backup {
             .list_spend_transactions(None)
             .await?
             .into_iter()
-            .map(|tx| tx.psbt.serialize_hex())
+            .map(|tx| tx.psbt.to_string())
             .collect();
 
         let statuses = [