diff --git a/contracts/OffsetHelper.sol b/contracts/OffsetHelper.sol
index 984217d..87523b0 100644
--- a/contracts/OffsetHelper.sol
+++ b/contracts/OffsetHelper.sol
@@ -359,7 +359,7 @@ contract OffsetHelper is OffsetHelperStorage {
         IToucanPoolToken PoolTokenImplementation = IToucanPoolToken(_fromToken);
 
         // auto redeem pool token for TCO2; will transfer automatically picked TCO2 to this contract
-        (tco2s, amounts) = PoolTokenImplementation.redeemAuto2(_amount);
+        (tco2s, amounts) = PoolTokenImplementation.redeemAuto(_amount);
 
         // update balances
         balances[msg.sender][_fromToken] -= _amount;
diff --git a/contracts/interfaces/IToucanPoolToken.sol b/contracts/interfaces/IToucanPoolToken.sol
index 25672ed..b0c2d5c 100644
--- a/contracts/interfaces/IToucanPoolToken.sol
+++ b/contracts/interfaces/IToucanPoolToken.sol
@@ -12,24 +12,27 @@ interface IToucanPoolToken is IERC20Upgradeable {
 
     function checkEligible(address erc20Addr) external view returns (bool);
 
-    function checkAttributeMatching(address erc20Addr)
-        external
-        view
-        returns (bool);
+    function checkAttributeMatching(
+        address erc20Addr
+    ) external view returns (bool);
 
     function calculateRedeemFees(
         address[] memory tco2s,
         uint256[] memory amounts
     ) external view returns (uint256);
 
-    function redeemMany(address[] memory tco2s, uint256[] memory amounts)
-        external;
+    function redeemMany(
+        address[] memory tco2s,
+        uint256[] memory amounts
+    ) external;
 
-    function redeemAuto(uint256 amount) external;
+    function redeemAuto(
+        uint256 amount
+    ) external returns (address[] memory tco2s, uint256[] memory amounts);
 
-    function redeemAuto2(uint256 amount)
-        external
-        returns (address[] memory tco2s, uint256[] memory amounts);
+    function redeemAuto2(
+        uint256 amount
+    ) external returns (address[] memory tco2s, uint256[] memory amounts);
 
     function getRemaining() external view returns (uint256);
 
diff --git a/utils/addresses.ts b/utils/addresses.ts
index 85fc4da..5beb610 100644
--- a/utils/addresses.ts
+++ b/utils/addresses.ts
@@ -1,3 +1,14 @@
+interface IfcPoolAddresses {
+  BCT: string;
+  NCT: string;
+}
+interface IfcNetworkPoolAddresses {
+  celo: IfcPoolAddresses;
+  alfajores: IfcPoolAddresses;
+  polygon: IfcPoolAddresses;
+  mumbai: IfcPoolAddresses;
+}
+
 interface IfcOneNetworkAddresses {
   BCT: string;
   NCT: string;
diff --git a/utils/paths.ts b/utils/paths.ts
index 39b743f..ab3c56a 100644
--- a/utils/paths.ts
+++ b/utils/paths.ts
@@ -1,7 +1,3 @@
-interface IfcPoolAddresses {
-  BCT: string;
-  NCT: string;
-}
 interface IfcTokenAddresses {
   mcUSD?: string[];
   cUSD?: string[];
@@ -16,12 +12,6 @@ interface IfcNetworkTokenAddresses {
   polygon: IfcTokenAddresses;
   mumbai: IfcTokenAddresses;
 }
-interface IfcNetworkPoolAddresses {
-  celo: IfcPoolAddresses;
-  alfajores: IfcPoolAddresses;
-  polygon: IfcPoolAddresses;
-  mumbai: IfcPoolAddresses;
-}
 
 const paths: IfcNetworkTokenAddresses = {
   celo: {
@@ -56,6 +46,11 @@ const paths: IfcNetworkTokenAddresses = {
       "0x874069Fa1Eb16D44d622F2e0Ca25eeA172369bC1",
       "0x71DB38719f9113A36e14F409bAD4F07B58b4730b",
     ],
+    WETH: [
+      "0x48D380cb7de1da5d4cA0DAA696480943fD93B9fF",
+      "0x874069Fa1Eb16D44d622F2e0Ca25eeA172369bC1",
+      "0x71DB38719f9113A36e14F409bAD4F07B58b4730b",
+    ],
   },
   polygon: {
     USDC: ["0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174"],