diff --git a/.changeset/large-onions-walk.md b/.changeset/large-onions-walk.md
new file mode 100644
index 000000000..38fc693c1
--- /dev/null
+++ b/.changeset/large-onions-walk.md
@@ -0,0 +1,6 @@
+---
+'@xchainjs/xchain-mayachain-amm': patch
+'@xchainjs/xchain-thorchain-amm': patch
+---
+
+Bug fix on swap validation with synth and erc-20 assets
diff --git a/packages/xchain-mayachain-amm/src/mayachain-amm.ts b/packages/xchain-mayachain-amm/src/mayachain-amm.ts
index fecdc755c..6849ebfae 100644
--- a/packages/xchain-mayachain-amm/src/mayachain-amm.ts
+++ b/packages/xchain-mayachain-amm/src/mayachain-amm.ts
@@ -10,7 +10,7 @@ import { Client as KujiraClient, defaultKujiParams } from '@xchainjs/xchain-kuji
 import { Client as MayaClient, MAYAChain } from '@xchainjs/xchain-mayachain'
 import { MayachainQuery, QuoteSwap, QuoteSwapParams } from '@xchainjs/xchain-mayachain-query'
 import { Client as ThorClient } from '@xchainjs/xchain-thorchain'
-import { Asset, CryptoAmount, baseAmount, getContractAddressFromAsset } from '@xchainjs/xchain-util'
+import { Asset, CryptoAmount, baseAmount, eqAsset, getContractAddressFromAsset } from '@xchainjs/xchain-util'
 import { Wallet } from '@xchainjs/xchain-wallet'
 import { ethers } from 'ethers'
 
@@ -127,7 +127,10 @@ export class MayachainAMM {
     const errors: string[] = []
 
     // Validate destination address if provided
-    if (destinationAddress && !this.wallet.validateAddress(destinationAsset.chain, destinationAddress)) {
+    if (
+      destinationAddress &&
+      !this.wallet.validateAddress(destinationAsset.synth ? MAYAChain : destinationAsset.chain, destinationAddress)
+    ) {
       errors.push(`destinationAddress ${destinationAddress} is not a valid address`)
     }
     // Validate affiliate address if provided
@@ -315,7 +318,9 @@ export class MayachainAMM {
    */
   private isERC20Asset(asset: Asset): boolean {
     // Check if the asset's chain is an EVM chain and if the symbol matches AssetETH.symbol
-    return this.isEVMChain(asset.chain) ? [AssetETH.symbol].includes(asset.symbol) : false
+    return this.isEVMChain(asset.chain)
+      ? [AssetETH].findIndex((nativeEVMAsset) => eqAsset(nativeEVMAsset, asset)) === -1
+      : false
   }
 
   /**
diff --git a/packages/xchain-thorchain-amm/__e2e__/thorchain-swap-e2e.ts b/packages/xchain-thorchain-amm/__e2e__/thorchain-swap-e2e.ts
index e61a07135..fa24cb146 100644
--- a/packages/xchain-thorchain-amm/__e2e__/thorchain-swap-e2e.ts
+++ b/packages/xchain-thorchain-amm/__e2e__/thorchain-swap-e2e.ts
@@ -9,7 +9,7 @@ import {
 import { Client as BchClient, defaultBchParams } from '@xchainjs/xchain-bitcoincash'
 import { Client as BscClient, defaultBscParams } from '@xchainjs/xchain-bsc'
 import { Network } from '@xchainjs/xchain-client'
-import { AssetATOM, Client as GaiaClient } from '@xchainjs/xchain-cosmos'
+import { AssetATOM, Client as GaiaClient, GAIAChain } from '@xchainjs/xchain-cosmos'
 import { Client as DogeClient, defaultDogeParams } from '@xchainjs/xchain-doge'
 import { AssetETH, Client as EthClient, defaultEthParams } from '@xchainjs/xchain-ethereum'
 import { Client as LtcClient, defaultLtcParams } from '@xchainjs/xchain-litecoin'
@@ -132,6 +132,42 @@ describe('ThorchainAmm e2e tests', () => {
       console.log(errors)
     })
 
+    it(`Should validate swap from ATOM to synth ATOM without errors`, async () => {
+      const errors = await thorchainAmm.validateSwap({
+        fromAsset: AssetATOM,
+        amount: new CryptoAmount(assetToBase(assetAmount('10')), AssetATOM),
+        destinationAddress: await wallet.getAddress(THORChain),
+        destinationAsset: assetFromStringEx('GAIA/ATOM'),
+      })
+
+      console.log(errors)
+    })
+
+    it(`Should validate swap from ATOM to synth ATOM with destination address error`, async () => {
+      const errors = await thorchainAmm.validateSwap({
+        fromAsset: AssetATOM,
+        amount: new CryptoAmount(assetToBase(assetAmount('10')), AssetATOM),
+        destinationAddress: await wallet.getAddress(GAIAChain),
+        destinationAsset: assetFromStringEx('GAIA/ATOM'),
+      })
+
+      console.log(errors)
+    })
+
+    it(`Should validate swap from AVAX.USDC to synth ATOM`, async () => {
+      const asset = assetFromStringEx('AVAX.USDC-0XB97EF9EF8734C71904D8002F8B6BC66DD9C48A6E')
+
+      const errors = await thorchainAmm.validateSwap({
+        fromAsset: asset,
+        fromAddress: await wallet.getAddress(asset.chain),
+        amount: new CryptoAmount(assetToBase(assetAmount('10')), asset),
+        destinationAddress: await wallet.getAddress(AssetATOM.chain),
+        destinationAsset: AssetATOM,
+      })
+
+      console.log(errors)
+    })
+
     it(`Should estimate swap from BTC to ETH`, async () => {
       const quoteSwap = await thorchainAmm.estimateSwap({
         fromAsset: AssetBTC,
diff --git a/packages/xchain-thorchain-amm/src/thorchain-amm.ts b/packages/xchain-thorchain-amm/src/thorchain-amm.ts
index 7aa56ac64..efd63e02c 100644
--- a/packages/xchain-thorchain-amm/src/thorchain-amm.ts
+++ b/packages/xchain-thorchain-amm/src/thorchain-amm.ts
@@ -125,7 +125,10 @@ export class ThorchainAMM {
   }: QuoteSwapParams): Promise<string[]> {
     const errors: string[] = []
 
-    if (destinationAddress && !this.wallet.validateAddress(destinationAsset.chain, destinationAddress)) {
+    if (
+      destinationAddress &&
+      !this.wallet.validateAddress(destinationAsset.synth ? THORChain : destinationAsset.chain, destinationAddress)
+    ) {
       errors.push(`destinationAddress ${destinationAddress} is not a valid address`)
     }
 
diff --git a/packages/xchain-thorchain-amm/src/utils.ts b/packages/xchain-thorchain-amm/src/utils.ts
index 47e6936f1..d143777d4 100644
--- a/packages/xchain-thorchain-amm/src/utils.ts
+++ b/packages/xchain-thorchain-amm/src/utils.ts
@@ -3,7 +3,7 @@ import { AssetBNB } from '@xchainjs/xchain-binance'
 import { AssetBSC } from '@xchainjs/xchain-bsc'
 import { AssetATOM } from '@xchainjs/xchain-cosmos'
 import { AssetETH } from '@xchainjs/xchain-ethereum'
-import { Asset, Chain } from '@xchainjs/xchain-util'
+import { Asset, Chain, eqAsset } from '@xchainjs/xchain-util'
 
 /**
  * Check if a chain is EVM and supported by the protocol
@@ -21,7 +21,7 @@ export const isProtocolEVMChain = (chain: Chain): boolean => {
  */
 export const isProtocolERC20Asset = (asset: Asset): boolean => {
   return isProtocolEVMChain(asset.chain)
-    ? ![AssetETH.symbol, AssetAVAX.symbol, AssetBSC.symbol].includes(asset.symbol)
+    ? [AssetETH, AssetAVAX, AssetBSC].findIndex((nativeEVMAsset) => eqAsset(nativeEVMAsset, asset)) === -1
     : false
 }