diff --git a/src/screens/WalletEmbed.tsx b/src/screens/WalletEmbed.tsx
index ee9f150..8873e51 100644
--- a/src/screens/WalletEmbed.tsx
+++ b/src/screens/WalletEmbed.tsx
@@ -1,4 +1,4 @@
-import React, { useEffect, useState, useCallback } from 'react';
+import React, { useEffect, useState, useCallback, useRef } from 'react';
 
 import { ScrollView, View } from 'react-native';
 import {
@@ -32,6 +32,7 @@ export const WalletEmbed = () => {
   const [gasLimit, setGasLimit] = useState('');
   const [isTxLoading, setIsTxLoading] = useState(false);
   const [txError, setTxError] = useState<string | null>(null);
+  const txEventRef = useRef<MessageEvent | null>(null);
 
   const { networksData } = useNetworks();
 
@@ -117,6 +118,8 @@ export const WalletEmbed = () => {
   const handleTxRequested = async (event: MessageEvent) => {
     if (event.data.type !== 'REQUEST_TX') return;
 
+    txEventRef.current = event;
+
     const { chainId, fromAddress, toAddress, amount } = event.data;
     const network = networksData.find(
       net => net.chainId === chainId
@@ -200,7 +203,7 @@ export const WalletEmbed = () => {
   useEffect(() => {
     window.addEventListener('message', handleTxRequested);
     return () => window.removeEventListener('message', handleTxRequested);
-  }, [networksData]);
+  }, [networksData, handleTxRequested]);
 
   const acceptRequestHandler = async () => {
     try {
@@ -240,7 +243,12 @@ export const WalletEmbed = () => {
         fee
       );
 
-      sendMessage(window, 'TRANSACTION_SUCCESS', txResult.transactionHash, '*');
+      const event = txEventRef.current;
+      if (event?.source) {
+        sendMessage(event.source as Window, 'TRANSACTION_SUCCESS', txResult.transactionHash, '*');
+      } else {
+        console.error('No event source available to send message');
+      }
     } catch (error) {
       console.error('Transaction error:', error);
       setTxError('Transaction failed');