diff --git a/contracts/Requests.sol b/contracts/Requests.sol
index 6a96ba3..40a1385 100644
--- a/contracts/Requests.sol
+++ b/contracts/Requests.sol
@@ -24,7 +24,7 @@ struct Ask {
 
 struct Content {
   string cid; // content id, used to download the dataset
-  bytes merkleRoot; // merkle root of the dataset, used to verify storage proofs
+  bytes32 merkleRoot; // merkle root of the dataset, used to verify storage proofs
 }
 
 enum RequestState {
diff --git a/test/ids.js b/test/ids.js
index 78bdaad..5ef1220 100644
--- a/test/ids.js
+++ b/test/ids.js
@@ -3,7 +3,7 @@ const { keccak256, defaultAbiCoder } = ethers.utils
 
 function requestId(request) {
   const Ask = "tuple(int64, uint256, uint256, uint256, uint256, uint256, int64)"
-  const Content = "tuple(string, bytes)"
+  const Content = "tuple(string, bytes32)"
   const Request =
     "tuple(address, " + Ask + ", " + Content + ", uint256, bytes32)"
   return keccak256(defaultAbiCoder.encode([Request], requestToArray(request)))