diff --git a/ethereum/vulnerable_erc20.sol b/ethereum/vulnerable_erc20.sol
index 68cebb5..612de74 100644
--- a/ethereum/vulnerable_erc20.sol
+++ b/ethereum/vulnerable_erc20.sol
@@ -101,8 +101,4 @@ contract VulnerableERC20 {
         return balances[account];
     }
 
-    function balanceOf3(address account) public view returns (uint256) {
-        return balances[account];
-    }
-
 }
\ No newline at end of file