diff --git a/bdk-ffi/src/bdk.udl b/bdk-ffi/src/bdk.udl
index 13efa68e..5edb5c87 100644
--- a/bdk-ffi/src/bdk.udl
+++ b/bdk-ffi/src/bdk.udl
@@ -250,11 +250,6 @@ interface PsbtFinalizeError {
   InputIdxOutofBounds(u32 psbt_inp, u32 requested);
 };
 
-[Error]
-interface RequestBuilderError {
-  RequestAlreadyConsumed();
-};
-
 [Error]
 interface TransactionError {
   Io();
diff --git a/bdk-ffi/src/error.rs b/bdk-ffi/src/error.rs
index 8e123ecb..649e5d43 100644
--- a/bdk-ffi/src/error.rs
+++ b/bdk-ffi/src/error.rs
@@ -408,7 +408,7 @@ pub enum FromScriptError {
     OtherFromScriptErr,
 }
 
-#[derive(Debug, thiserror::Error)]
+#[derive(Debug, thiserror::Error, uniffi::Error)]
 pub enum RequestBuilderError {
     #[error("the request has already been consumed")]
     RequestAlreadyConsumed,
diff --git a/bdk-ffi/src/lib.rs b/bdk-ffi/src/lib.rs
index ec2d7dd4..3597fc9c 100644
--- a/bdk-ffi/src/lib.rs
+++ b/bdk-ffi/src/lib.rs
@@ -29,7 +29,6 @@ use crate::error::PersistenceError;
 use crate::error::PsbtError;
 use crate::error::PsbtFinalizeError;
 use crate::error::PsbtParseError;
-use crate::error::RequestBuilderError;
 use crate::error::TransactionError;
 
 use bdk_wallet::bitcoin::Network;