diff --git a/ethereum/contracts/zksync/facets/Executor.sol b/ethereum/contracts/zksync/facets/Executor.sol
index db119bf666f..e9cbb5e72ea 100644
--- a/ethereum/contracts/zksync/facets/Executor.sol
+++ b/ethereum/contracts/zksync/facets/Executor.sol
@@ -364,7 +364,7 @@ contract ExecutorFacet is Base, IExecutor {
 
     function _verifyProof(uint256[] memory proofPublicInput, ProofInput calldata _proof) internal view {
         // We can only process 1 batch proof at a time.
-        require(_proof.serializedProof.length == 1, "t4");
+        require(proofPublicInput.length == 1, "t4");
 
         bool successVerifyProof = s.verifier.verify(
             proofPublicInput,