diff --git a/Cargo.toml b/Cargo.toml
index aef5de4..c92f587 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,6 +22,8 @@ dusk-bls12_381-sign = { version = "0.5", default-features = false }
 rkyv = { version = "0.7", default-features = false }
 ff = { version = "0.13", default-features = false }
 
+stake-contract-types ={ version="0.1.0", path="../rusk/contracts/stake-types/" }
+
 [dev-dependencies]
 rand = "^0.8"
 
diff --git a/src/imp.rs b/src/imp.rs
index 33bd45c..d7cbf9b 100644
--- a/src/imp.rs
+++ b/src/imp.rs
@@ -33,6 +33,7 @@ use rkyv::ser::serializers::{
 use rkyv::validation::validators::CheckDeserializeError;
 use rkyv::Serialize;
 use rusk_abi::ContractId;
+use stake_contract_types::Unstake;
 
 const MAX_INPUT_NOTES: usize = 4;
 
@@ -581,6 +582,7 @@ where
 
         let signature = unstake_sign(&sk, &pk, stake.counter, unstake_note);
 
+        let unstake_note = unstake_note.to_bytes().to_vec();
         let unstake = Unstake {
             public_key: pk,
             signature,