diff --git a/contracts/DODODrops/DODODropsV1.sol b/contracts/DODODrops/DODODropsV1.sol
index e545250..ef7cdbc 100644
--- a/contracts/DODODrops/DODODropsV1.sol
+++ b/contracts/DODODrops/DODODropsV1.sol
@@ -84,7 +84,8 @@ contract DODODropsV1 is ERC721URIStorage, InitializableOwnable {
 
     function redeemPrize(uint256 ticketNum) external {
         require(_REDEEM_ALLOWED_, "REDEEM_CLOSED");
-        require(!address(msg.sender).isContract(), "ONLY_ALLOW_EOA");
+        // require(!address(msg.sender).isContract(), "ONLY_ALLOW_EOA");
+        require(tx.origin == msg.sender, "ONLY_ALLOW_EOA");
         require(ticketNum >= 1 && ticketNum <= _USER_TICKETS_[msg.sender], "TICKET_NUM_INVALID");
         _USER_TICKETS_[msg.sender] = _USER_TICKETS_[msg.sender].sub(ticketNum);
         _TOTAL_TICKETS_ = _TOTAL_TICKETS_.sub(ticketNum);
diff --git a/contracts/DODODrops/DODODropsV2/DODODrops.sol b/contracts/DODODrops/DODODropsV2/DODODrops.sol
index c9c8086..5ef3e41 100644
--- a/contracts/DODODrops/DODODropsV2/DODODrops.sol
+++ b/contracts/DODODrops/DODODropsV2/DODODrops.sol
@@ -132,7 +132,8 @@ contract DODODrops is InitializableMintableERC20, ReentrancyGuard {
     }
 
     function redeemTicket(uint256 ticketNum, address referer) external {
-        require(!address(msg.sender).isContract(), "ONLY_ALLOW_EOA");
+        // require(!address(msg.sender).isContract(), "ONLY_ALLOW_EOA");
+        require(tx.origin == msg.sender, "ONLY_ALLOW_EOA");
         require(ticketNum >= 1 && ticketNum <= balanceOf(msg.sender), "TICKET_NUM_INVALID");
         _burn(msg.sender,ticketNum);
         for (uint256 i = 0; i < ticketNum; i++) {