diff --git a/contracts/ito.sol b/contracts/ito.sol
index 326caf8..2035abc 100644
--- a/contracts/ito.sol
+++ b/contracts/ito.sol
@@ -227,6 +227,7 @@ contract HappyTokenPool is Initializable {
     )
     public payable returns (uint256 swapped) {
 
+        require(tx.origin == msg.sender, "not real user");
         uint128 from_value = input_total;
         Pool storage pool = pool_by_id[id];
         Packed1 memory packed1 = pool.packed1;
diff --git a/contracts/test/MultiCall.sol b/contracts/test/MultiCall.sol
new file mode 100644
index 0000000..6b39bf8
--- /dev/null
+++ b/contracts/test/MultiCall.sol
@@ -0,0 +1,23 @@
+pragma solidity >=0.5.0;
+
+import "@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol";
+
+contract Multicall is IERC721Receiver {
+    struct Call {
+        address target;
+        bytes callData;
+        uint256 value;
+    }
+
+    function aggregate(Call[] memory calls) external payable {
+        for(uint256 i = 0; i < calls.length; i++) {
+            (bool success, bytes memory ret) = calls[i].target.call{ value: calls[i].value}(calls[i].callData);
+            require(success, "Multicall: call failed");
+        }
+    }
+
+    function onERC721Received(address, address, uint256, bytes calldata)
+            public override pure returns(bytes4) {
+        return this.onERC721Received.selector;
+    }
+}
diff --git a/contracts/test_tokenA.sol b/contracts/test/test_tokenA.sol
similarity index 100%
rename from contracts/test_tokenA.sol
rename to contracts/test/test_tokenA.sol
diff --git a/contracts/test_tokenB.sol b/contracts/test/test_tokenB.sol
similarity index 100%
rename from contracts/test_tokenB.sol
rename to contracts/test/test_tokenB.sol
diff --git a/contracts/test_tokenC.sol b/contracts/test/test_tokenC.sol
similarity index 100%
rename from contracts/test_tokenC.sol
rename to contracts/test/test_tokenC.sol
diff --git a/test/TestTP.js b/test/TestTP.js
index 2282e9d..3c6de4f 100644
--- a/test/TestTP.js
+++ b/test/TestTP.js
@@ -34,6 +34,7 @@ let snapshotId;
 let testTokenADeployed;
 let testTokenBDeployed;
 let testTokenCDeployed;
+let multiCallContract;
 
 let HappyTokenPool;
 let happyTokenPoolDeployed;
@@ -70,6 +71,11 @@ describe('HappyTokenPool', () => {
         HappyTokenPool = await ethers.getContractFactory('HappyTokenPool');
         HappyTokenPoolProxy = await upgrades.deployProxy(HappyTokenPool, [base_timestamp]);
         happyTokenPoolDeployed = new ethers.Contract(HappyTokenPoolProxy.address, itoJsonABI.abi, creator);
+        {
+            const factory = await ethers.getContractFactory('Multicall');
+            const nContract = await factory.deploy();
+            multiCallContract = await nContract.deployed();
+        }
     });
 
     beforeEach(async () => {
@@ -681,6 +687,31 @@ describe('HappyTokenPool', () => {
             }
         });
 
+        it('Should swap tx from contracts not work', async () => {
+            fpp.total_tokens = BigNumber('100e18').toFixed();
+            fpp.limit = BigNumber('50e18').toFixed();
+            const { id: pool_id } = await getResultFromPoolFill(happyTokenPoolDeployed, fpp);
+
+            // 0.004 ETH => 40 TESTA
+            approve_amount = BigNumber('4e15').toFixed();
+            exchange_amount = approve_amount;
+            var vr = getVerification(PASSWORD, multiCallContract.address);
+            const encodedSwapData = itoInterface.encodeFunctionData('swap', [
+                pool_id,
+                vr.verification,
+                0,
+                exchange_amount,
+                [pool_id],
+            ]);
+            await expect(
+                multiCallContract
+                    .connect(signers[4])
+                    .aggregate([[happyTokenPoolDeployed.address, encodedSwapData, approve_amount]], {
+                        value: approve_amount,
+                    }),
+            ).to.be.rejectedWith('Multicall: call failed');
+        });
+
         it('Should swap the remaining token when the amount of swap token is greater than total token', async () => {
             const ratio = 10 ** 10;
             fpp.exchange_ratios = [1, ratio];