diff --git a/package.json b/package.json
index d31f694..c359668 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.20.29-rc0",
+  "version": "0.20.29-rc1",
   "description": "Orion Protocol SDK",
   "main": "./lib/index.cjs",
   "module": "./lib/index.js",
diff --git a/src/Unit/Exchange/generateSwapCalldata.ts b/src/Unit/Exchange/generateSwapCalldata.ts
index 2b04531..f5cacde 100644
--- a/src/Unit/Exchange/generateSwapCalldata.ts
+++ b/src/Unit/Exchange/generateSwapCalldata.ts
@@ -128,7 +128,7 @@ export async function generateSwapCalldata({
     if (singleSwap.assetOut == ethers.ZeroAddress) singleSwap.assetOut = wethAddress;
     return singleSwap;
   });
-  
+
   let calls: BytesLike[];
   ({ swapDescription, calls } = await processSwaps(
     swapDescription,
@@ -151,8 +151,8 @@ export async function generateSwapCalldata({
   if (useExchangeBalance) {
     swapDescription.flags = 1n << 255n;
   }
-
-  return { swapDescription, calldata, value: additionalTransferAmount };
+  const value = srcToken == ZeroAddress ? additionalTransferAmount : 0n;
+  return { swapDescription, calldata, value };
 }
 
 async function processSwaps(