diff --git a/contracts/avalanche/common/interfaces.sol b/contracts/avalanche/common/interfaces.sol
index e9a3b0c1..912e57b1 100644
--- a/contracts/avalanche/common/interfaces.sol
+++ b/contracts/avalanche/common/interfaces.sol
@@ -1,5 +1,6 @@
 //SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
+pragma abicoder v2;
 
 interface TokenInterface {
     function approve(address, uint256) external;
@@ -23,5 +24,5 @@ interface AccountInterface {
 }
 
 interface InstaConnectors {
-    function connectors(string memory) external returns (address);
+    function isConnectors(string[] calldata) external returns (bool, address[] memory);
 }
diff --git a/contracts/avalanche/connectors/swap/helpers.sol b/contracts/avalanche/connectors/swap/helpers.sol
index dabc32d7..b9207a26 100644
--- a/contracts/avalanche/connectors/swap/helpers.sol
+++ b/contracts/avalanche/connectors/swap/helpers.sol
@@ -28,10 +28,13 @@ contract SwapHelpers {
 		require(_length > 0, "zero-length-not-allowed");
 		require(_datas.length == _length, "calldata-length-invalid");
 
+		(bool isOk, address[] memory connectors) = instaConnectors.isConnectors(
+			_connectors
+		);
+		require(isOk, "connector-names-invalid");
+
 		for (uint256 i = 0; i < _length; i++) {
-			(success, returnData) = instaConnectors
-				.connectors(_connectors[i])
-				.delegatecall(_datas[i]);
+			(success, returnData) = connectors[i].delegatecall(_datas[i]);
 			if (success) {
 				connector = _connectors[i];
 				break;
diff --git a/contracts/mainnet/common/interfaces.sol b/contracts/mainnet/common/interfaces.sol
index e1ed2ca2..29f60e4b 100644
--- a/contracts/mainnet/common/interfaces.sol
+++ b/contracts/mainnet/common/interfaces.sol
@@ -1,5 +1,6 @@
 //SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
+pragma abicoder v2;
 
 interface TokenInterface {
     function approve(address, uint256) external;
@@ -29,5 +30,5 @@ interface AccountInterface {
 }
 
 interface InstaConnectors {
-    function connectors(string memory) external returns (address);
-}
\ No newline at end of file
+    function isConnectors(string[] calldata) external returns (bool, address[] memory);
+}
diff --git a/contracts/mainnet/connectors/swap/helpers.sol b/contracts/mainnet/connectors/swap/helpers.sol
index edf49e1f..1405be37 100644
--- a/contracts/mainnet/connectors/swap/helpers.sol
+++ b/contracts/mainnet/connectors/swap/helpers.sol
@@ -28,10 +28,13 @@ contract SwapHelpers {
 		require(_length > 0, "zero-length-not-allowed");
 		require(_datas.length == _length, "calldata-length-invalid");
 
+		(bool isOk, address[] memory connectors) = instaConnectors.isConnectors(
+			_connectors
+		);
+		require(isOk, "connector-names-invalid");
+
 		for (uint256 i = 0; i < _length; i++) {
-			(success, returnData) = instaConnectors
-				.connectors(_connectors[i])
-				.delegatecall(_datas[i]);
+			(success, returnData) = connectors[i].delegatecall(_datas[i]);
 			if (success) {
 				connector = _connectors[i];
 				break;
diff --git a/contracts/polygon/common/interfaces.sol b/contracts/polygon/common/interfaces.sol
index e395b83c..94f054e1 100644
--- a/contracts/polygon/common/interfaces.sol
+++ b/contracts/polygon/common/interfaces.sol
@@ -1,5 +1,6 @@
 //SPDX-License-Identifier: MIT
 pragma solidity ^0.7.0;
+pragma abicoder v2;
 
 interface TokenInterface {
     function approve(address, uint256) external;
@@ -28,5 +29,6 @@ interface AccountInterface {
 }
 
 interface InstaConnectors {
-    function connectors(string memory) external returns (address);
+    function isConnectors(string[] calldata) external returns (bool, address[] memory);
 }
+
diff --git a/contracts/polygon/connectors/swap/helpers.sol b/contracts/polygon/connectors/swap/helpers.sol
index acecb5b5..b1badc57 100644
--- a/contracts/polygon/connectors/swap/helpers.sol
+++ b/contracts/polygon/connectors/swap/helpers.sol
@@ -28,10 +28,13 @@ contract SwapHelpers {
 		require(_length > 0, "zero-length-not-allowed");
 		require(_datas.length == _length, "calldata-length-invalid");
 
+		(bool isOk, address[] memory connectors) = instaConnectors.isConnectors(
+			_connectors
+		);
+		require(isOk, "connector-names-invalid");
+
 		for (uint256 i = 0; i < _length; i++) {
-			(success, returnData) = instaConnectors
-				.connectors(_connectors[i])
-				.delegatecall(_datas[i]);
+			(success, returnData) = connectors[i].delegatecall(_datas[i]);
 			if (success) {
 				connector = _connectors[i];
 				break;