diff --git a/plonky2x/src/frontend/hash/keccak/mod.rs b/plonky2x/src/frontend/hash/keccak/mod.rs
index 1bbf5a32b..cec347fb4 100644
--- a/plonky2x/src/frontend/hash/keccak/mod.rs
+++ b/plonky2x/src/frontend/hash/keccak/mod.rs
@@ -18,7 +18,7 @@ impl<L: PlonkParameters<D>, const D: usize> CircuitBuilder<L, D> {
             _phantom: PhantomData::<L>,
         };
         let output = generator.output;
-        self.add_simple_generator(generator.clone());
+        self.add_simple_generator(generator);
         output
     }
 
@@ -33,7 +33,7 @@ impl<L: PlonkParameters<D>, const D: usize> CircuitBuilder<L, D> {
             length: Some(length),
             _phantom: PhantomData::<L>,
         };
-        self.add_simple_generator(generator.clone());
+        self.add_simple_generator(generator);
         generator.output
     }
 }
diff --git a/plonky2x/src/frontend/merkle/tendermint.rs b/plonky2x/src/frontend/merkle/tendermint.rs
index ef862d501..7a01f6656 100644
--- a/plonky2x/src/frontend/merkle/tendermint.rs
+++ b/plonky2x/src/frontend/merkle/tendermint.rs
@@ -113,7 +113,7 @@ impl<L: PlonkParameters<D>, const D: usize> CircuitBuilder<L, D> {
 
     pub fn hash_leaves<const LEAF_SIZE_BYTES: usize>(
         &mut self,
-        leaves: &Vec<BytesVariable<LEAF_SIZE_BYTES>>,
+        leaves: Vec<BytesVariable<LEAF_SIZE_BYTES>>,
     ) -> Vec<Bytes32Variable> {
         leaves
             .iter()
@@ -123,8 +123,8 @@ impl<L: PlonkParameters<D>, const D: usize> CircuitBuilder<L, D> {
 
     pub fn get_root_from_hashed_leaves<const NB_LEAVES: usize>(
         &mut self,
-        leaf_hashes: &Vec<Bytes32Variable>,
-        leaves_enabled: &Vec<BoolVariable>,
+        leaf_hashes: Vec<Bytes32Variable>,
+        leaves_enabled: Vec<BoolVariable>,
     ) -> Bytes32Variable {
         assert!(NB_LEAVES.is_power_of_two());
 
@@ -149,14 +149,14 @@ impl<L: PlonkParameters<D>, const D: usize> CircuitBuilder<L, D> {
 
     pub fn compute_root_from_leaves<const NB_LEAVES: usize, const LEAF_SIZE_BYTES: usize>(
         &mut self,
-        leaves: &Vec<BytesVariable<LEAF_SIZE_BYTES>>,
-        leaves_enabled: &Vec<BoolVariable>,
+        leaves: Vec<BytesVariable<LEAF_SIZE_BYTES>>,
+        leaves_enabled: Vec<BoolVariable>,
     ) -> Bytes32Variable {
         // TODO: Remove, this is just for debugging.
         assert_eq!(leaves.len(), NB_LEAVES);
 
         let hashed_leaves = self.hash_leaves::<LEAF_SIZE_BYTES>(leaves);
-        self.get_root_from_hashed_leaves::<NB_LEAVES>(&hashed_leaves, leaves_enabled)
+        self.get_root_from_hashed_leaves::<NB_LEAVES>(hashed_leaves, leaves_enabled)
     }
 }
 
@@ -187,7 +187,7 @@ mod tests {
 
         let leaves = builder.read::<ArrayVariable<BytesVariable<48>, 32>>();
         let enabled = builder.read::<ArrayVariable<BoolVariable, 32>>();
-        let root = builder.compute_root_from_leaves::<32, 48>(&leaves.as_vec(), &enabled.as_vec());
+        let root = builder.compute_root_from_leaves::<32, 48>(leaves.as_vec(), enabled.as_vec());
         builder.write::<Bytes32Variable>(root);
         let circuit = builder.build();
         circuit.test_default_serializers();