From 834d43eb38d51bbf5593258572791e32d8209d93 Mon Sep 17 00:00:00 2001
From: Mubaris NK <mubaris@instadapp.io>
Date: Sun, 4 Apr 2021 18:59:26 +0530
Subject: [PATCH] Fix double migration issue

---
 contracts/receivers/aave-v2-receiver/main.sol | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/contracts/receivers/aave-v2-receiver/main.sol b/contracts/receivers/aave-v2-receiver/main.sol
index 9158328..da679db 100644
--- a/contracts/receivers/aave-v2-receiver/main.sol
+++ b/contracts/receivers/aave-v2-receiver/main.sol
@@ -68,6 +68,8 @@ contract AaveV2Migrator is MigrateResolver {
     function _migratePosition(address owner) internal {
         AaveData storage data = positions[owner];
 
+        require(!data.isFinal, "already-migrated");
+
         for (uint i = 0; i < data.supplyTokens.length; i++) {
             IERC20(data.supplyTokens[i]).safeTransfer(data.targetDsa, data.supplyAmts[i]);
         }