diff --git a/packages/react/src/useWalletAccountTransactionSendingSigner.ts b/packages/react/src/useWalletAccountTransactionSendingSigner.ts
index 15cab84ae287..b45d68c9805d 100644
--- a/packages/react/src/useWalletAccountTransactionSendingSigner.ts
+++ b/packages/react/src/useWalletAccountTransactionSendingSigner.ts
@@ -25,7 +25,7 @@ export function useWalletAccountTransactionSendingSigner<TWalletAccount extends
     uiWalletAccount: TWalletAccount,
     chain: `solana:${string}`,
 ): TransactionSendingSigner<TWalletAccount['address']> {
-    const encoderRef = useRef<ReturnType<typeof getTransactionEncoder>>();
+    const encoderRef = useRef<ReturnType<typeof getTransactionEncoder> | null>(null);
     const signAndSendTransaction = useSignAndSendTransaction(uiWalletAccount, chain);
     return useMemo(
         () => ({
diff --git a/packages/react/src/useWalletAccountTransactionSigner.ts b/packages/react/src/useWalletAccountTransactionSigner.ts
index 06591dd4b6cd..977ac29b0879 100644
--- a/packages/react/src/useWalletAccountTransactionSigner.ts
+++ b/packages/react/src/useWalletAccountTransactionSigner.ts
@@ -25,7 +25,7 @@ export function useWalletAccountTransactionSigner<TWalletAccount extends UiWalle
     uiWalletAccount: TWalletAccount,
     chain: `solana:${string}`,
 ): TransactionModifyingSigner<TWalletAccount['address']> {
-    const encoderRef = useRef<ReturnType<typeof getTransactionCodec>>();
+    const encoderRef = useRef<ReturnType<typeof getTransactionCodec> | null>(null);
     const signTransaction = useSignTransaction(uiWalletAccount, chain);
     return useMemo(
         () => ({