diff --git a/crates/cdk/src/mint/mod.rs b/crates/cdk/src/mint/mod.rs
index cfbd1a69..0e599f71 100644
--- a/crates/cdk/src/mint/mod.rs
+++ b/crates/cdk/src/mint/mod.rs
@@ -734,7 +734,7 @@ impl Mint {
                 output_total,
                 fee
             );
-            return Err(Error::InsufficientInputs(
+            return Err(Error::TransactionUnbalanced(
                 proofs_total.into(),
                 output_total.into(),
                 fee.into(),