diff --git a/auction-server/src/auction.rs b/auction-server/src/auction.rs
index 2b7dcbfd..fb22bab3 100644
--- a/auction-server/src/auction.rs
+++ b/auction-server/src/auction.rs
@@ -100,9 +100,10 @@ pub fn get_simulation_call(
     bid_amounts: Vec<BidAmount>,
 ) -> FunctionCall<Arc<Provider<Http>>, Provider<Http>, Vec<MulticallStatus>> {
     let client = Arc::new(provider);
-    let per_contract = ExpressRelayContract::new(chain_config.express_relay_contract, client);
+    let express_relay_contract =
+        ExpressRelayContract::new(chain_config.express_relay_contract, client);
 
-    per_contract
+    express_relay_contract
         .multicall(permission, target_contracts, calldata, bid_amounts)
         .from(relayer)
 }
@@ -195,9 +196,9 @@ pub async fn submit_bids(
         transformer,
     ));
 
-    let per_contract =
+    let express_relay_contract =
         SignableExpressRelayContract::new(chain_config.express_relay_contract, client);
-    let call = per_contract.multicall(permission, contracts, calldata, bid_amounts);
+    let call = express_relay_contract.multicall(permission, contracts, calldata, bid_amounts);
     let mut gas_estimate = call
         .estimate_gas()
         .await
diff --git a/auction-server/src/liquidation_adapter.rs b/auction-server/src/liquidation_adapter.rs
index a78824ad..c367b77a 100644
--- a/auction-server/src/liquidation_adapter.rs
+++ b/auction-server/src/liquidation_adapter.rs
@@ -125,7 +125,7 @@ pub async fn verify_opportunity(
     let signature = fake_wallet.sign_hash(digest)?;
     fake_bid.signature = signature;
     let params = make_opportunity_execution_params(opportunity.clone(), fake_bid.clone());
-    let per_calldata = OpportunityAdapter::new(
+    let adapter_calldata = OpportunityAdapter::new(
         chain_store.config.opportunity_adapter_contract,
         client.clone(),
     )
@@ -141,7 +141,7 @@ pub async fn verify_opportunity(
         chain_store.config.clone(),
         opportunity.permission_key,
         vec![chain_store.config.opportunity_adapter_contract],
-        vec![per_calldata],
+        vec![adapter_calldata],
         vec![fake_bid.amount],
     )
     .tx;
@@ -280,7 +280,7 @@ pub fn make_opportunity_execution_params(
     }
 }
 
-pub async fn make_liquidator_calldata(
+pub async fn make_adapter_calldata(
     opportunity: OpportunityParamsV1,
     bid: OpportunityBid,
     provider: Provider<Http>,
@@ -436,7 +436,7 @@ pub async fn handle_liquidation_bid(
         .get(&params.chain_id)
         .ok_or(RestError::InvalidChainId)?;
 
-    let per_calldata = make_liquidator_calldata(
+    let adapter_calldata = make_adapter_calldata(
         params.clone(),
         opportunity_bid.clone(),
         chain_store.provider.clone(),
@@ -450,7 +450,7 @@ pub async fn handle_liquidation_bid(
             permission_key: params.permission_key.clone(),
             chain_id:       params.chain_id.clone(),
             contract:       chain_store.config.opportunity_adapter_contract,
-            calldata:       per_calldata,
+            calldata:       adapter_calldata,
             amount:         opportunity_bid.amount,
         },
     )
diff --git a/per_multicall/README.md b/per_multicall/README.md
index 3d224418..29d6a65a 100644
--- a/per_multicall/README.md
+++ b/per_multicall/README.md
@@ -1,4 +1,4 @@
-# PER
+# Express Relay Contracts
 
 ## Setup
 
diff --git a/per_multicall/test/ExpressRelayIntegration.sol b/per_multicall/test/ExpressRelayIntegration.sol
index ab9b4f60..18e291ba 100644
--- a/per_multicall/test/ExpressRelayIntegration.sol
+++ b/per_multicall/test/ExpressRelayIntegration.sol
@@ -506,8 +506,8 @@ contract ExpressRelayIntegrationTest is
             tokensDebt[vaultNumber],
             amountsDebt[vaultNumber]
         );
-        TokenAmount[] memory expectedReceiptTokens = new TokenAmount[](1);
-        expectedReceiptTokens[0] = TokenAmount(
+        TokenAmount[] memory buyTokens = new TokenAmount[](1);
+        buyTokens[0] = TokenAmount(
             tokensCollateral[vaultNumber],
             amountsCollateral[vaultNumber]
         );
@@ -528,7 +528,7 @@ contract ExpressRelayIntegrationTest is
             bytes
                 memory signatureLiquidator = createOpportunityExecutionSignature(
                     sellTokens,
-                    expectedReceiptTokens,
+                    buyTokens,
                     contractAddress,
                     calldataVault,
                     value,
@@ -536,9 +536,9 @@ contract ExpressRelayIntegrationTest is
                     bidInfos[i].validUntil,
                     bidInfos[i].liquidatorSk
                 );
-            ExecutionParams memory liquidationCallParams = ExecutionParams(
+            ExecutionParams memory executionParams = ExecutionParams(
                 sellTokens,
-                expectedReceiptTokens,
+                buyTokens,
                 bidInfos[i].liquidator,
                 contractAddress,
                 calldataVault,
@@ -550,7 +550,7 @@ contract ExpressRelayIntegrationTest is
 
             data[i] = abi.encodeWithSelector(
                 liquidationAdapter.executeOpportunity.selector,
-                liquidationCallParams
+                executionParams
             );
         }
     }