diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6476f31ddf..609e4f58e6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -75,7 +75,8 @@ The minor version will be incremented upon a breaking change and the patch versi
 - syn: Remove `idl-parse` and `seeds` features ([#2824](https://github.com/coral-xyz/anchor/pull/2824)).
 - ts: Change `accounts` method to no longer accept resolvable accounts ([#2824](https://github.com/coral-xyz/anchor/pull/2824)).
 - ts: `Program` instances use camelCase for everything ([#2824](https://github.com/coral-xyz/anchor/pull/2824)).
-- ts: Remove discriminator functions ([#2824](https://github.com/coral-xyz/anchor/pull/2824)).
+- ts: Remove discriminator functions ([#2838](https://github.com/coral-xyz/anchor/pull/2824)).
+- ts: Change type of `Provider.publicKey` to `PublicKey | null` for compatibility with `WalletContextState` of `@solana/wallet-adapter-react`  ([#2824](https://github.com/coral-xyz/anchor/pull/2838)).
 
 ## [0.29.0] - 2023-10-16
 
diff --git a/ts/packages/anchor/src/program/namespace/account.ts b/ts/packages/anchor/src/program/namespace/account.ts
index 87e53e155c..d7d2b94438 100644
--- a/ts/packages/anchor/src/program/namespace/account.ts
+++ b/ts/packages/anchor/src/program/namespace/account.ts
@@ -344,7 +344,7 @@ export class AccountClient<
   ): Promise<TransactionInstruction> {
     const size = this.size;
 
-    if (this._provider.publicKey === undefined) {
+    if (!this._provider.publicKey) {
       throw new Error(
         "This function requires the Provider interface implementor to have a 'publicKey' field."
       );
diff --git a/ts/packages/anchor/src/provider.ts b/ts/packages/anchor/src/provider.ts
index 0731732ebb..2d66f49073 100644
--- a/ts/packages/anchor/src/provider.ts
+++ b/ts/packages/anchor/src/provider.ts
@@ -21,7 +21,7 @@ import {
 
 export default interface Provider {
   readonly connection: Connection;
-  readonly publicKey?: PublicKey;
+  readonly publicKey: PublicKey | null;
 
   send?(
     tx: Transaction | VersionedTransaction,