diff --git a/contracts/Vault.sol b/contracts/Vault.sol
index 809f935..610bd59 100644
--- a/contracts/Vault.sol
+++ b/contracts/Vault.sol
@@ -12,8 +12,8 @@ contract Vault is VaultBase {
     Recipient recipient
   ) public view returns (uint128) {
     Controller controller = Controller.wrap(msg.sender);
-    Account memory b = _getAccount(controller, fund, recipient);
-    return b.available + b.designated;
+    Account memory account = _getAccount(controller, fund, recipient);
+    return account.available + account.designated;
   }
 
   function getDesignatedBalance(
@@ -21,8 +21,8 @@ contract Vault is VaultBase {
     Recipient recipient
   ) public view returns (uint128) {
     Controller controller = Controller.wrap(msg.sender);
-    Account memory b = _getAccount(controller, fund, recipient);
-    return b.designated;
+    Account memory account = _getAccount(controller, fund, recipient);
+    return account.designated;
   }
 
   function getLock(Fund fund) public view returns (Lock memory) {