diff --git a/contracts/DODOToken/Governance.sol b/contracts/DODOToken/Governance.sol
index 4f2371d..d06a787 100644
--- a/contracts/DODOToken/Governance.sol
+++ b/contracts/DODOToken/Governance.sol
@@ -13,9 +13,11 @@ contract Governance is InitializableOwnable {
 
     // ============ Storage ============
 
-    address immutable _DODO_TOKEN_;
+    address _DODO_TOKEN_;
 
-    constructor(address dodoToken) public {
+    constructor() public {
+    }
+    function setVDODOAddress(address dodoToken) public onlyOwner{
         _DODO_TOKEN_ = dodoToken;
     }
     function getLockedvDODO(address account) external pure returns (uint256 lockedvDODO) {
diff --git a/contracts/DODOToken/vDODOToken.sol b/contracts/DODOToken/vDODOToken.sol
index 9a29e6e..818ef3c 100644
--- a/contracts/DODOToken/vDODOToken.sol
+++ b/contracts/DODOToken/vDODOToken.sol
@@ -159,7 +159,9 @@ contract vDODOToken is InitializableOwnable, ReentrancyGuard {
             superiorVDODO = DecimalMath.mulFloor(newVdodoAmount, _SUPERIOR_RATIO_);
         }
 
-        _mintToSuperior(user, superiorVDODO);
+        if (user.superior != address(0)) {
+            _mintToSuperior(user, superiorVDODO);
+        }
         
         _updateAlpha(newAlpha);
 
@@ -209,7 +211,7 @@ contract vDODOToken is InitializableOwnable, ReentrancyGuard {
         balance = user.VDODOAmount.sub(DecimalMath.divFloor(user.credit, getLatestAlpha()));
     }
 
-    function availableBalanceOf(address account) public returns (uint256 balance) {
+    function availableBalanceOf(address account) public view returns (uint256 balance) {
         uint256 lockedBalance = IGovernance(_DOOD_GOV_).getLockedvDODO(account);
         balance = balanceOf(account).sub(lockedBalance);
     }
diff --git a/test/Token/vdodo.test.ts b/test/Token/vdodo.test.ts
index 9538008..c264f09 100644
--- a/test/Token/vdodo.test.ts
+++ b/test/Token/vdodo.test.ts
@@ -26,6 +26,9 @@ async function init(ctx: VDODOContext): Promise<void> {
   await ctx.mintTestToken(account0, decimalStr("1000"));
   await ctx.mintTestToken(account1, decimalStr("1000"));
 
+  await ctx.approveProxy(account0);
+  await ctx.approveProxy(account1);
+  await ctx.approveProxy(account2);
 }
 
 describe("VDODO", () => {
@@ -48,7 +51,6 @@ describe("VDODO", () => {
   describe("vdodo", () => {
 
     it("vdodo init", async () => {
-
       assert.equal(
         await ctx.DODO.methods.balanceOf(account0).call(),
         decimalStr("1000")
@@ -69,7 +71,35 @@ describe("VDODO", () => {
         await ctx.VDODO.methods.totalSupply().call(),
         decimalStr("0")
       );
-      
+    });
+    it("vdodo first mint with no superior", async () => {
+
+      await ctx.VDODO.methods.mint(decimalStr("10"),"0x0000000000000000000000000000000000000000").send(ctx.sendParam(account0))
+      assert.equal(
+        await ctx.DODO.methods.balanceOf(account0).call(),
+        decimalStr("990")
+      );
+      assert.equal(
+        await await ctx.VDODO.methods.alpha().call(),
+        await ctx.alpha
+      );
+      assert.equal(
+        await ctx.DODO.methods.balanceOf(ctx.VDODO.options.address).call(),
+        decimalStr("10")
+      );
+      assert.equal(
+        await ctx.VDODO.methods.balanceOf(account0).call(),
+        decimalStr("0.1")
+      );
+
+      assert.equal(
+        await ctx.VDODO.methods.totalSupply().call(),
+        decimalStr("0.1")
+      );
+      assert.notEqual(
+        await ctx.VDODO.methods.lastRewardBlock().call(),
+        ctx.lastRewardBlock
+      );
     });
   })
 });
diff --git a/test/utils/VDODOContext.ts b/test/utils/VDODOContext.ts
index 3827889..4a44c0b 100644
--- a/test/utils/VDODOContext.ts
+++ b/test/utils/VDODOContext.ts
@@ -47,6 +47,11 @@ export class VDODOContext {
     this.EVM = new EVM();
     this.Web3 = getDefaultWeb3();
 
+    const allAccounts = await this.Web3.eth.getAccounts();
+    this.Deployer = allAccounts[0];
+    this.Maintainer = allAccounts[1];
+    this.SpareAccounts = allAccounts.slice(2, 10);
+
     this.DODO = await contracts.newContract(
       contracts.MINTABLE_ERC20_CONTRACT_NAME,
       ["DODO Token", "DODO", 18]
@@ -67,9 +72,14 @@ export class VDODOContext {
       [this.DODOApprove.options.address]
     )
 
+  
+    this.Governance = await contracts.newContract(
+      contracts.DODO_GOVERNANCE
+    )
     this.VDODO = await contracts.newContract(
       contracts.VDODO_NAME,
       [
+        this.Governance.options.address,
         this.DODO.options.address,
         this.DODOCirculationHelper.options.address,
         this.DODOApproveProxy.options.address,
@@ -77,26 +87,31 @@ export class VDODOContext {
       ]
     )
 
-    this.Governance = await contracts.newContract(
-      contracts.DODO_GOVERNANCE,
-      [this.VDODO.options.address]
-    )
+    await this.Governance.methods.initOwner(
+      this.Deployer
+    ).send(this.sendParam(this.Deployer))
 
-    const allAccounts = await this.Web3.eth.getAccounts();
-    this.Deployer = allAccounts[0];
-    this.Maintainer = allAccounts[1];
-    this.SpareAccounts = allAccounts.slice(2, 10);
+    await this.Governance.methods.setVDODOAddress(
+      this.VDODO.options.address
+    ).send(this.sendParam(this.Deployer))
 
-    await this.VDODO.methods.updateGovernance(
-      this.Governance.options.address
+    await this.DODOApprove.methods.init(this.Deployer,this.DODOApproveProxy.options.address).send(this.sendParam(this.Deployer));
+    await this.DODOApproveProxy.methods.init(this.Deployer, [this.VDODO.options.address]).send(this.sendParam(this.Deployer));
+
+
+    
+
+    await this.VDODO.methods.initOwner(
+      this.Deployer
     ).send(this.sendParam(this.Deployer))
 
     this.alpha = await this.VDODO.methods.alpha().call();
     this.lastRewardBlock = await this.VDODO.methods.lastRewardBlock().call();
     
+    console.log(log.blueText("[Init VDODO context]"));
+    
     console.log("alpha = "+ this.alpha);
     console.log("lastRewardBlock = " + this.lastRewardBlock);
-    console.log(log.blueText("[Init VDODO context]"));
   }
 
   sendParam(sender, value = "0") {
@@ -111,6 +126,14 @@ export class VDODOContext {
   async mintTestToken(to: string, amount: string) {
     await this.DODO.methods.mint(to, amount).send(this.sendParam(this.Deployer));
   }
+  async approveProxy(account: string) {
+    await this.DODO.methods
+      .approve(this.DODOApprove.options.address, MAX_UINT256)
+      .send(this.sendParam(account));
+    await this.VDODO.methods
+      .approve(this.DODOApprove.options.address, MAX_UINT256)
+      .send(this.sendParam(account));
+  }
 }
 
 export async function getVDODOContext(): Promise<VDODOContext> {