diff --git a/evm/src/proof.rs b/evm/src/proof.rs
index 49fcd3f9..7c80641a 100644
--- a/evm/src/proof.rs
+++ b/evm/src/proof.rs
@@ -122,34 +122,34 @@ impl PublicValuesTarget {
         buffer.write_target(block_difficulty)?;
         buffer.write_target(block_gaslimit)?;
         buffer.write_target(block_chain_id)?;
-        buffer.write_target_vec(&block_base_fee)?;
-        buffer.write_target_vec(&block_bloom)?;
+        buffer.write_target_array(&block_base_fee)?;
+        buffer.write_target_array(&block_bloom)?;
 
         Ok(())
     }
 
     pub fn from_buffer(buffer: &mut Buffer) -> IoResult<Self> {
         let trie_roots_before = TrieRootsTarget {
-            state_root: buffer.read_target_array()?,
-            transactions_root: buffer.read_target_array()?,
-            receipts_root: buffer.read_target_array()?,
+            state_root: buffer.read_target_array()?.try_into().unwrap(),
+            transactions_root: buffer.read_target_array()?.try_into().unwrap(),
+            receipts_root: buffer.read_target_array()?.try_into().unwrap(),
         };
 
         let trie_roots_after = TrieRootsTarget {
-            state_root: buffer.read_target_array()?,
-            transactions_root: buffer.read_target_array()?,
-            receipts_root: buffer.read_target_array()?,
+            state_root: buffer.read_target_array()?.try_into().unwrap(),
+            transactions_root: buffer.read_target_array()?.try_into().unwrap(),
+            receipts_root: buffer.read_target_array()?.try_into().unwrap(),
         };
 
         let block_metadata = BlockMetadataTarget {
-            block_beneficiary: buffer.read_target_array()?,
+            block_beneficiary: buffer.read_target_array()?.try_into().unwrap(),
             block_timestamp: buffer.read_target()?,
             block_number: buffer.read_target()?,
             block_difficulty: buffer.read_target()?,
             block_gaslimit: buffer.read_target()?,
             block_chain_id: buffer.read_target()?,
-            block_base_fee: buffer.read_target_vec()?.try_into().unwrap(),
-            block_bloom: buffer.read_target_vec()?.try_into().unwrap(),
+            block_base_fee: buffer.read_target_array()?.try_into().unwrap(),
+            block_bloom: buffer.read_target_array()?.try_into().unwrap(),
         };
 
         Ok(Self {