diff --git a/contracts/mainnet/connectors/makerdao/helpers.sol b/contracts/mainnet/connectors/makerdao/helpers.sol
index a6c2b506..af322ef5 100644
--- a/contracts/mainnet/connectors/makerdao/helpers.sol
+++ b/contracts/mainnet/connectors/makerdao/helpers.sol
@@ -43,7 +43,7 @@ abstract contract Helpers is DSMath, Basic {
      * @dev Gem Join address is ETH type collateral.
     */
     function isEth(address tknAddr) internal pure returns (bool) {
-        return tknAddr == ethAddr ? true : false;
+        return tknAddr == wethAddr ? true : false;
     }
 
     /**
diff --git a/contracts/mainnet/connectors/reflexer/helpers.sol b/contracts/mainnet/connectors/reflexer/helpers.sol
index abcba530..c46776a7 100644
--- a/contracts/mainnet/connectors/reflexer/helpers.sol
+++ b/contracts/mainnet/connectors/reflexer/helpers.sol
@@ -57,7 +57,7 @@ abstract contract Helpers is DSMath, Basic {
      * @dev Collateral Join address is ETH type collateral.
     */
     function isEth(address tknAddr) internal pure returns (bool) {
-        return tknAddr == ethAddr ? true : false;
+        return tknAddr == wethAddr ? true : false;
     }
 
     /**