diff --git a/ocean-token/contracts/OceanToken.sol b/ocean-token/contracts/OceanToken.sol
index 252f7a9..4df7d89 100644
--- a/ocean-token/contracts/OceanToken.sol
+++ b/ocean-token/contracts/OceanToken.sol
@@ -11,23 +11,41 @@ contract OceanToken is ERC20Capped, ERC20Burnable {
     address payable public owner;
     uint256 public blockReward;
 
-    constructor(uint256 cap, uint256 reward) ERC20("OceanToken", "OCT") ERC20Capped(cap * (10 ** decimals())) {
+    constructor(
+        uint256 cap,
+        uint256 reward
+    ) ERC20("OceanToken", "OCT") ERC20Capped(cap * (10 ** decimals())) {
         owner = payable(msg.sender);
         _mint(owner, 70000000 * (10 ** decimals()));
         blockReward = reward * (10 ** decimals());
     }
 
-    function _mint(address account, uint256 amount) internal virtual override(ERC20Capped, ERC20) {
-        require(ERC20.totalSupply() + amount <= cap(), "ERC20Capped: cap exceeded");
+    function _mint(
+        address account,
+        uint256 amount
+    ) internal virtual override(ERC20Capped, ERC20) {
+        require(
+            ERC20.totalSupply() + amount <= cap(),
+            "ERC20Capped: cap exceeded"
+        );
         super._mint(account, amount);
     }
 
     function _mintMinerReward() internal {
-        _mint(block.coinbase, blockReward);
+        if (ERC20.totalSupply() <= (80000000 * (10 ** decimals())))
+            _mint(block.coinbase, blockReward);
     }
 
-    function _beforeTokenTransfer(address from, address to, uint256 value) internal virtual override {
-        if(from != address(0) && to != block.coinbase && block.coinbase != address(0)) {
+    function _beforeTokenTransfer(
+        address from,
+        address to,
+        uint256 value
+    ) internal virtual override {
+        if (
+            from != address(0) &&
+            to != block.coinbase &&
+            block.coinbase != address(0)
+        ) {
             _mintMinerReward();
         }
         super._beforeTokenTransfer(from, to, value);
@@ -41,8 +59,8 @@ contract OceanToken is ERC20Capped, ERC20Burnable {
         selfdestruct(owner);
     }
 
-    modifier onlyOwner {
+    modifier onlyOwner() {
         require(msg.sender == owner, "Only the owner can call this function");
         _;
     }
-}
\ No newline at end of file
+}