From a4dc928a93a887ba6baf69f821e5aee764516bec Mon Sep 17 00:00:00 2001
From: Maxim Tiron <defeator@mail.ru>
Date: Mon, 21 Oct 2024 14:39:21 +0300
Subject: [PATCH] ERC20: optimized gas costs in `_spendAllowance` (#5271)

---
 contracts/token/ERC20/ERC20.sol | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/contracts/token/ERC20/ERC20.sol b/contracts/token/ERC20/ERC20.sol
index 0b707604c0c..6a9865e6aef 100644
--- a/contracts/token/ERC20/ERC20.sol
+++ b/contracts/token/ERC20/ERC20.sol
@@ -300,7 +300,7 @@ abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
      */
     function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
         uint256 currentAllowance = allowance(owner, spender);
-        if (currentAllowance != type(uint256).max) {
+        if (currentAllowance < type(uint256).max) {
             if (currentAllowance < value) {
                 revert ERC20InsufficientAllowance(spender, currentAllowance, value);
             }