diff --git a/src/mocks/Reserve.sol b/src/mocks/Reserve.sol
index 045718c..fe12923 100644
--- a/src/mocks/Reserve.sol
+++ b/src/mocks/Reserve.sol
@@ -20,11 +20,11 @@ contract Reserve is ERC20Permit {
     }
 
     fallback() external payable {
-        _innerMint(msg.sender, msg.value);
+        _mint(msg.sender, msg.value);
     }
 
     receive() external payable {
-        _innerMint(msg.sender, msg.value);
+        _mint(msg.sender, msg.value);
     }
 
     function changeRate(uint256 rate) external {
@@ -39,13 +39,16 @@ contract Reserve is ERC20Permit {
 
     function withdraw(address payable receiver) external {
         if (msg.sender != _owner) revert OnlyOwner();
-        (bool sent,) = receiver.call{ value: accumulatedDonation }("");
+        uint256 accumulatedDonationCached = accumulatedDonation;
+        accumulatedDonation = 0;
+        
+        (bool sent,) = receiver.call{ value: accumulatedDonationCached }("");
         require(sent, "Failed to send Ether");
     }
 
     function superMint(address account, uint256 value) external {
         if (msg.sender != _owner) revert OnlyOwner();
-        _innerMint(account, value);
+        _mint(account, value);
     }
 
     function mint(address account) external payable {