diff --git a/contracts/receivers/aave-v2-receiver/interfaces.sol b/contracts/receivers/aave-v2-receiver/interfaces.sol
index e15cf82..f481668 100644
--- a/contracts/receivers/aave-v2-receiver/interfaces.sol
+++ b/contracts/receivers/aave-v2-receiver/interfaces.sol
@@ -95,4 +95,8 @@ interface AaveInterface {
         uint256 ltv,
         uint256 healthFactor
     );
+}
+
+interface InstaListInterface {
+    function accountID(address) external view returns (uint);
 }
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diff --git a/contracts/receivers/aave-v2-receiver/main.sol b/contracts/receivers/aave-v2-receiver/main.sol
index a672253..1a20c19 100644
--- a/contracts/receivers/aave-v2-receiver/main.sol
+++ b/contracts/receivers/aave-v2-receiver/main.sol
@@ -99,6 +99,9 @@ contract AaveV2Migrator is MigrateResolver {
         address[] memory supplyTokens = data.supplyTokens;
         address[] memory borrowTokens = data.borrowTokens;
 
+        // TODO: IMPORTANT!! before migrating make sure the new DSA is v2 DSA on L1.
+        require(instaList.accountID(dsa) != 0, "not-a-dsa");
+
         AaveInterface aave = AaveInterface(aaveProvider.getLendingPool());
 
         transferAtokens(aave, dsa, supplyTokens, supplyAmts);
diff --git a/contracts/receivers/aave-v2-receiver/variables.sol b/contracts/receivers/aave-v2-receiver/variables.sol
index 3248973..e87decf 100644
--- a/contracts/receivers/aave-v2-receiver/variables.sol
+++ b/contracts/receivers/aave-v2-receiver/variables.sol
@@ -4,7 +4,8 @@ import {
     TokenMappingInterface,
     AaveLendingPoolProviderInterface,
     AaveDataProviderInterface,
-    IndexInterface
+    IndexInterface,
+    InstaListInterface
 } from "./interfaces.sol";
 
 contract Variables {
@@ -35,6 +36,8 @@ contract Variables {
     address[] public supportedTokens; // don't add maticAddr. Only add wmaticAddr?
 
     // Address which will receive L1 data and post it on L2
-    address public maticReceiver = address(0); // TODO: Change address
+    address public maticReceiver = 0x0000000000000000000000000000000000001001;
+
+    InstaListInterface public instaList = InstaListInterface(0x839c2D3aDe63DF5b0b8F3E57D5e145057Ab41556);
 
 }
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