diff --git a/examples/piggybank/src/utils.ts b/examples/piggybank/src/utils.ts
index 139a73f9..4fe09edf 100644
--- a/examples/piggybank/src/utils.ts
+++ b/examples/piggybank/src/utils.ts
@@ -10,6 +10,7 @@ import {
     InitName,
     ReceiveName,
     UpdateContractPayload,
+    AccountAddress,
 } from '@concordium/web-sdk';
 
 export const CONTRACT_NAME = 'PiggyBank';
@@ -26,7 +27,7 @@ export const deposit = (account: string, index: bigint, subindex = 0n, amount =
     detectConcordiumProvider()
         .then((provider) => {
             provider
-                .sendTransaction(account, AccountTransactionType.Update, {
+                .sendTransaction(AccountAddress.fromBase58(account), AccountTransactionType.Update, {
                     amount: CcdAmount.fromMicroCcd(amount),
                     address: ContractAddress.create(index, subindex),
                     receiveName: ReceiveName.fromString(`${CONTRACT_NAME}.insert`),
@@ -50,7 +51,7 @@ export const smash = (account: string, index: bigint, subindex = 0n) => {
     detectConcordiumProvider()
         .then((provider) => {
             provider
-                .sendTransaction(account, AccountTransactionType.Update, {
+                .sendTransaction(AccountAddress.fromBase58(account), AccountTransactionType.Update, {
                     amount: CcdAmount.fromMicroCcd(0), // This feels weird? Why do I need an amount for a non-payable receive?
                     address: ContractAddress.create(index, subindex),
                     receiveName: ReceiveName.fromString(`${CONTRACT_NAME}.smash`),
diff --git a/packages/browser-wallet-api/src/compatibility.ts b/packages/browser-wallet-api/src/compatibility.ts
index 4ffe85ab..902b5434 100644
--- a/packages/browser-wallet-api/src/compatibility.ts
+++ b/packages/browser-wallet-api/src/compatibility.ts
@@ -42,7 +42,9 @@ export function isGtuAmount(cand: any): cand is GtuAmount {
 }
 
 function sanitizeAccountAddress(accountAddress: AccountAddressSource): AccountAddress.Type {
-    return AccountAddress.instanceOf(accountAddress) ? accountAddress : AccountAddress.fromBase58(accountAddress);
+    return typeof accountAddress === 'string'
+        ? AccountAddress.fromBase58(accountAddress)
+        : AccountAddress.fromBase58(accountAddress.address);
 }
 
 export type SanitizedSignMessageInput = {
@@ -92,10 +94,10 @@ export function sanitizeAddCIS2TokensInput(
 ): SanitizedAddCIS2TokensInput {
     const accountAddress = sanitizeAccountAddress(_accountAddress);
     let contractAddress: ContractAddress.Type;
-    if (ContractAddress.instanceOf(contractAddressSource)) {
-        contractAddress = contractAddressSource;
-    } else {
+    if (typeof contractAddressSource === 'bigint') {
         contractAddress = ContractAddress.create(contractAddressSource, contractSubindex);
+    } else {
+        contractAddress = ContractAddress.create(contractAddressSource.index, contractSubindex);
     }
 
     return { accountAddress, tokenIds, contractAddress };
diff --git a/packages/browser-wallet/CHANGELOG.md b/packages/browser-wallet/CHANGELOG.md
index b140bf2c..b2466a00 100644
--- a/packages/browser-wallet/CHANGELOG.md
+++ b/packages/browser-wallet/CHANGELOG.md
@@ -8,6 +8,7 @@
 -   Sign message's stringification failing with new `deserializeTypeValue`.
 -   An issue where the max contract execution energy was not rendered correctly for init contract transactions.
 -   Updated web-sdk to fix an issue where init contract transactions were not serialized correctly.
+-   Errors in wallet-api from version mismatch between wallet and dApps.
 
 ## 1.1.10