diff --git a/packages/utils/src/lib.rs b/packages/utils/src/lib.rs
index 4384403..1ac2bf1 100644
--- a/packages/utils/src/lib.rs
+++ b/packages/utils/src/lib.rs
@@ -12,14 +12,12 @@ use tendermint::merkle::proof::ProofOps;
 pub fn convert_tm_to_ics_merkle_proof(
     tm_proof: &ProofOps,
 ) -> Result<MerkleProof, prost::DecodeError> {
-    let mut proofs = Vec::new();
-
-    for op in &tm_proof.ops {
-        let mut parsed = CommitmentProof { proof: None };
+    let mut proofs = Vec::with_capacity(tm_proof.ops.len());
 
+    for (i, op) in tm_proof.ops.iter().enumerate() {
+        let mut parsed = CommitmentProof::default();
         prost::Message::merge(&mut parsed, op.data.as_slice())?;
-
-        proofs.push(parsed);
+        proofs[i] = parsed;
     }
 
     Ok(MerkleProof { proofs })