diff --git a/modules/sdk-coin-ton/src/lib/tonWhalesWithdrawalBuilder.ts b/modules/sdk-coin-ton/src/lib/tonWhalesWithdrawalBuilder.ts
index f17b621fc1..5607a419f9 100644
--- a/modules/sdk-coin-ton/src/lib/tonWhalesWithdrawalBuilder.ts
+++ b/modules/sdk-coin-ton/src/lib/tonWhalesWithdrawalBuilder.ts
@@ -24,6 +24,7 @@ export class TonWhalesWithdrawalBuilder extends TransactionBuilder {
   setWithdrawalMessage(unstakeAmount: string, queryId?: string): TonWhalesWithdrawalBuilder {
     const qId = queryId || '0000000000000000';
 
+    this.transaction.withdrawAmount = unstakeAmount;
     this.transaction.message = TON_WHALES_WITHDRAW_OPCODE + qId + unstakeAmount;
     return this;
   }
diff --git a/modules/sdk-coin-ton/test/unit/tonWhalesWithdrawalBuilder.ts b/modules/sdk-coin-ton/test/unit/tonWhalesWithdrawalBuilder.ts
index be02cdab90..c16898ba4b 100644
--- a/modules/sdk-coin-ton/test/unit/tonWhalesWithdrawalBuilder.ts
+++ b/modules/sdk-coin-ton/test/unit/tonWhalesWithdrawalBuilder.ts
@@ -99,6 +99,10 @@ describe('Ton Whales Withdrawal Builder', () => {
 
         // Build Signed Transaction
         const signedBuiltTx = await builder.build();
+        const jsonTx = signedBuiltTx.toJson();
+
+        // Verify that the builder correctly set the withdrawal amount on the transaction object
+        should.equal(jsonTx.withdrawAmount, fixture.withdrawAmount);
 
         // Byte-for-byte equality with the Sandbox output
         should.equal(signedBuiltTx.toBroadcastFormat(), fixture.tx);