diff --git a/contracts/feeAuction/FeeAuction.sol b/contracts/feeAuction/FeeAuction.sol
index 61851606..3f3bf328 100644
--- a/contracts/feeAuction/FeeAuction.sol
+++ b/contracts/feeAuction/FeeAuction.sol
@@ -152,6 +152,7 @@ contract FeeAuction is IFeeAuction, UUPSUpgradeable, Access, FeeAuctionStorageUt
         balances = new uint256[](assetsLength);
         for (uint256 i; i < assetsLength; ++i) {
             address asset = _assets[i];
+            if (asset == address(0)) revert InvalidAsset();
             uint256 balance = IERC20(asset).balanceOf(address(this));
             balances[i] = balance;
             if (balance < _minAmounts[i]) revert InsufficientBalance(asset, balance, _minAmounts[i]);
diff --git a/contracts/interfaces/IFeeAuction.sol b/contracts/interfaces/IFeeAuction.sol
index ff9a79cc..daaca3ff 100644
--- a/contracts/interfaces/IFeeAuction.sol
+++ b/contracts/interfaces/IFeeAuction.sol
@@ -36,6 +36,9 @@ interface IFeeAuction {
     /// @dev Set start price
     event SetStartPrice(uint256 startPrice);
 
+    /// @dev Asset must be non-zero address
+    error InvalidAsset();
+
     /// @dev Assets must be non-zero length and have matching lengths
     error InvalidAssets();