diff --git a/contracts/arbitrum/connectors/1inch/helpers.sol b/contracts/arbitrum/connectors/1inch/helpers.sol
index 41cc4b0d..7e04a7d2 100644
--- a/contracts/arbitrum/connectors/1inch/helpers.sol
+++ b/contracts/arbitrum/connectors/1inch/helpers.sol
@@ -9,15 +9,5 @@ abstract contract Helpers is DSMath, Basic {
     /**
      * @dev 1Inch Address
      */
-    address internal constant oneInchAddr = 0x11111112542D85B3EF69AE05771c2dCCff4fAa26;
-
-    /**
-     * @dev 1inch swap function sig
-     */
-    bytes4 internal constant oneInchSwapSig = 0x7c025200;
-
-     /**
-     * @dev 1inch swap function sig
-     */
-    bytes4 internal constant oneInchUnoswapSig = 0x2e95b6c8;
+    address internal constant oneInchAddr = 0x1111111254fb6c44bAC0beD2854e76F90643097d;
 }
\ No newline at end of file
diff --git a/contracts/arbitrum/connectors/1inch/main.sol b/contracts/arbitrum/connectors/1inch/main.sol
index 7adef93c..b2a1dafa 100644
--- a/contracts/arbitrum/connectors/1inch/main.sol
+++ b/contracts/arbitrum/connectors/1inch/main.sol
@@ -14,20 +14,6 @@ import { Helpers } from "./helpers.sol";
 import { Events } from "./events.sol";
 
 abstract contract OneInchResolver is Helpers, Events {
-    /**
-     * @dev 1inch swap uses `.call()`. This function restrict it to call only swap/trade functionality
-     * @param callData - calldata to extract the first 4 bytes for checking function signature
-     */
-    function checkOneInchSig(bytes memory callData) internal pure returns(bool isOk) {
-        bytes memory _data = callData;
-        bytes4 sig;
-        // solium-disable-next-line security/no-inline-assembly
-        assembly {
-            sig := mload(add(_data, 32))
-        }
-        isOk = sig == oneInchSwapSig || sig == oneInchUnoswapSig;
-    }
-
     /**
      * @dev 1inch API swap handler
      * @param oneInchData - contains data returned from 1inch API. Struct defined in interfaces.sol
@@ -77,14 +63,10 @@ abstract contract OneInchResolverHelpers is OneInchResolver {
             approve(TokenInterface(_sellAddr), oneInchAddr, oneInchData._sellAmt);
         }
 
-        require(checkOneInchSig(oneInchData.callData), "Not-swap-function");
-
         oneInchData._buyAmt = oneInchSwap(oneInchData, ethAmt);
         setUint(setId, oneInchData._buyAmt);
 
         return oneInchData;
-
-        // emitLogSellThree(oneInchData, setId);
     }
 }
 
@@ -124,5 +106,5 @@ abstract contract OneInch is OneInchResolverHelpers {
 }
 
 contract ConnectV2OneInchArbitrum is OneInch {
-    string public name = "1Inch-v1.0";
+    string public name = "1Inch-v4-v1.0";
 }
diff --git a/contracts/mainnet/connectors/1inch/helpers.sol b/contracts/mainnet/connectors/1inch/helpers.sol
index 41cc4b0d..7e04a7d2 100644
--- a/contracts/mainnet/connectors/1inch/helpers.sol
+++ b/contracts/mainnet/connectors/1inch/helpers.sol
@@ -9,15 +9,5 @@ abstract contract Helpers is DSMath, Basic {
     /**
      * @dev 1Inch Address
      */
-    address internal constant oneInchAddr = 0x11111112542D85B3EF69AE05771c2dCCff4fAa26;
-
-    /**
-     * @dev 1inch swap function sig
-     */
-    bytes4 internal constant oneInchSwapSig = 0x7c025200;
-
-     /**
-     * @dev 1inch swap function sig
-     */
-    bytes4 internal constant oneInchUnoswapSig = 0x2e95b6c8;
+    address internal constant oneInchAddr = 0x1111111254fb6c44bAC0beD2854e76F90643097d;
 }
\ No newline at end of file
diff --git a/contracts/mainnet/connectors/1inch/main.sol b/contracts/mainnet/connectors/1inch/main.sol
index bf215788..a374bf54 100644
--- a/contracts/mainnet/connectors/1inch/main.sol
+++ b/contracts/mainnet/connectors/1inch/main.sol
@@ -14,20 +14,6 @@ import { Helpers } from "./helpers.sol";
 import { Events } from "./events.sol";
 
 abstract contract OneInchResolver is Helpers, Events {
-    /**
-     * @dev 1inch swap uses `.call()`. This function restrict it to call only swap/trade functionality
-     * @param callData - calldata to extract the first 4 bytes for checking function signature
-     */
-    function checkOneInchSig(bytes memory callData) internal pure returns(bool isOk) {
-        bytes memory _data = callData;
-        bytes4 sig;
-        // solium-disable-next-line security/no-inline-assembly
-        assembly {
-            sig := mload(add(_data, 32))
-        }
-        isOk = sig == oneInchSwapSig || sig == oneInchUnoswapSig;
-    }
-
     /**
      * @dev 1inch API swap handler
      * @param oneInchData - contains data returned from 1inch API. Struct defined in interfaces.sol
@@ -77,8 +63,6 @@ abstract contract OneInchResolverHelpers is OneInchResolver {
             approve(TokenInterface(_sellAddr), oneInchAddr, oneInchData._sellAmt);
         }
 
-        require(checkOneInchSig(oneInchData.callData), "Not-swap-function");
-
         oneInchData._buyAmt = oneInchSwap(oneInchData, ethAmt);
         setUint(setId, oneInchData._buyAmt);
 
@@ -124,5 +108,5 @@ abstract contract OneInch is OneInchResolverHelpers {
 }
 
 contract ConnectV2OneInch is OneInch {
-    string public name = "1Inch-v1.2";
+    string public name = "1Inch-v4-v1.0";
 }
diff --git a/contracts/polygon/connectors/1inch/helpers.sol b/contracts/polygon/connectors/1inch/helpers.sol
index 41cc4b0d..7e04a7d2 100644
--- a/contracts/polygon/connectors/1inch/helpers.sol
+++ b/contracts/polygon/connectors/1inch/helpers.sol
@@ -9,15 +9,5 @@ abstract contract Helpers is DSMath, Basic {
     /**
      * @dev 1Inch Address
      */
-    address internal constant oneInchAddr = 0x11111112542D85B3EF69AE05771c2dCCff4fAa26;
-
-    /**
-     * @dev 1inch swap function sig
-     */
-    bytes4 internal constant oneInchSwapSig = 0x7c025200;
-
-     /**
-     * @dev 1inch swap function sig
-     */
-    bytes4 internal constant oneInchUnoswapSig = 0x2e95b6c8;
+    address internal constant oneInchAddr = 0x1111111254fb6c44bAC0beD2854e76F90643097d;
 }
\ No newline at end of file
diff --git a/contracts/polygon/connectors/1inch/main.sol b/contracts/polygon/connectors/1inch/main.sol
index 38a720c0..1a986074 100644
--- a/contracts/polygon/connectors/1inch/main.sol
+++ b/contracts/polygon/connectors/1inch/main.sol
@@ -14,20 +14,6 @@ import { Helpers } from "./helpers.sol";
 import { Events } from "./events.sol";
 
 abstract contract OneInchResolver is Helpers, Events {
-    /**
-     * @dev 1inch swap uses `.call()`. This function restrict it to call only swap/trade functionality
-     * @param callData - calldata to extract the first 4 bytes for checking function signature
-     */
-    function checkOneInchSig(bytes memory callData) internal pure returns(bool isOk) {
-        bytes memory _data = callData;
-        bytes4 sig;
-        // solium-disable-next-line security/no-inline-assembly
-        assembly {
-            sig := mload(add(_data, 32))
-        }
-        isOk = sig == oneInchSwapSig || sig == oneInchUnoswapSig;
-    }
-
     /**
      * @dev 1inch API swap handler
      * @param oneInchData - contains data returned from 1inch API. Struct defined in interfaces.sol
@@ -77,8 +63,6 @@ abstract contract OneInchResolverHelpers is OneInchResolver {
             approve(TokenInterface(_sellAddr), oneInchAddr, oneInchData._sellAmt);
         }
 
-        require(checkOneInchSig(oneInchData.callData), "Not-swap-function");
-
         oneInchData._buyAmt = oneInchSwap(oneInchData, ethAmt);
         setUint(setId, oneInchData._buyAmt);
 
@@ -124,5 +108,5 @@ abstract contract OneInch is OneInchResolverHelpers {
 }
 
 contract ConnectV2OneInchPolygon is OneInch {
-    string public name = "1Inch-v1";
+    string public name = "1Inch-v4-v1";
 }