diff --git a/contracts/connectors/synthetix.sol b/contracts/connectors/synthetix.sol
index 6ee08c0..15d5416 100644
--- a/contracts/connectors/synthetix.sol
+++ b/contracts/connectors/synthetix.sol
@@ -27,7 +27,7 @@ contract SynthetixStakingHelper is DSMath, Stores {
   /**
    * @dev Return InstaDApp Synthetix Mapping Addresses
    */
-  function getMappingAddr() internal pure returns (address) {
+  function getMappingAddr() virtual internal view returns (address) {
     return 0xe81F70Cc7C0D46e12d70efc60607F16bbD617E88; // InstaMapping Address
   }
 
diff --git a/contracts/tests/MockSynthetix.sol b/contracts/tests/MockSynthetix.sol
index 33a393e..b2a1dcd 100644
--- a/contracts/tests/MockSynthetix.sol
+++ b/contracts/tests/MockSynthetix.sol
@@ -1,23 +1,26 @@
 pragma solidity ^0.6.0;
+pragma experimental ABIEncoderV2;
 
 import { ConnectSynthetixStaking } from "../connectors/synthetix.sol";
 
 contract MockSynthetixStaking is ConnectSynthetixStaking{
   address public synthetixStakingAddr;
+  address public instaMappingAddr;
 
-  constructor(address _synthetixStakingAddr) public {
+  constructor(address _synthetixStakingAddr, address _instaMappingAddr) public {
     synthetixStakingAddr = _synthetixStakingAddr;
+    instaMappingAddr = _instaMappingAddr;
   }
 
-  // function getSynthetixStakingAddr(address token) override internal returns (address) {
-  //   return synthetixStakingAddr;
-  // }
-
   function emitEvent(bytes32 eventCode, bytes memory eventData) override internal {}
 
   function getSnxAddr() override internal view returns (address) {
     return synthetixStakingAddr;
   }
 
+  function getMappingAddr() override internal view returns (address) {
+    return instaMappingAddr;
+  }
+
   function setUint(uint setId, uint val) override internal {}
 }
diff --git a/test/SynthetixProtocol.js b/test/SynthetixProtocol.js
index 978e6fd..378bf7f 100644
--- a/test/SynthetixProtocol.js
+++ b/test/SynthetixProtocol.js
@@ -20,7 +20,7 @@ contract('ConnectSynthetixStaking', async accounts => {
   before(async function () {
     mock = await MockContract.new();
     mockInstaMapping = await MockInstaMapping.new();
-    mockSynthetixStaking = await MockSynthetixStaking.new(mock.address);
+    mockSynthetixStaking = await MockSynthetixStaking.new(mock.address, mockInstaMapping.address);
     stakingContract = new web3.eth.Contract(synthetixStaking, mock.address);
     token = new web3.eth.Contract(erc20ABI, mock.address);
     mockInstaMapping.addStakingMapping('snx', mock.address, mock.address);
@@ -41,7 +41,7 @@ contract('ConnectSynthetixStaking', async accounts => {
     await mock.givenMethodReturnBool(stake, "true");
 
     const tx = await mockSynthetixStaking.deposit(
-      mock.address,
+      "snx",
       10000000,
       0,
       0
@@ -58,7 +58,7 @@ contract('ConnectSynthetixStaking', async accounts => {
     await mock.givenMethodReturnBool(reward, "true");
 
     const tx = await mockSynthetixStaking.withdraw(
-      mock.address,
+      "snx",
       10000000,
       0,
       111,
@@ -73,9 +73,25 @@ contract('ConnectSynthetixStaking', async accounts => {
     let reward = await stakingContract.methods.getReward().encodeABI();
     await mock.givenMethodReturnBool(reward, "true");
     const tx = await mockSynthetixStaking.claimReward(
-      mock.address,
+      "snx",
       112
     )
     expectEvent(tx, "LogClaimedReward");
   });
+
+  it('cannot deposit if pool removed', async function() {
+    mockInstaMapping.removeStakingMapping('snx', mock.address);
+    // mocking stake
+    let stake = await stakingContract.methods.stake(10000000).encodeABI();
+    await mock.givenMethodReturnBool(stake, "true");
+
+    const tx = mockSynthetixStaking.deposit(
+      "snx",
+      10000000,
+      0,
+      0
+    )
+    expectRevert(tx, "Wrong Staking Name");
+  });
+
 })