diff --git a/contracts/libraries/KindMath.sol b/contracts/libraries/KindMath.sol
deleted file mode 100644
index e9de30c65..000000000
--- a/contracts/libraries/KindMath.sol
+++ /dev/null
@@ -1,48 +0,0 @@
-pragma solidity ^0.5.0;
-
-/**
- * @title KindMath
- * @notice ref. https://github.com/OpenZeppelin/openzeppelin-solidity/blob/master/contracts/math/SafeMath.sol
- * @dev Math operations with safety checks that returns boolean
- */
-library KindMath {
-
-    /**
-     * @dev Multiplies two numbers, return false on overflow.
-     */
-    function checkMul(uint256 a, uint256 b) internal pure returns (bool) {
-        // Gas optimization: this is cheaper than requireing 'a' not being zero, but the
-        // benefit is lost if 'b' is also tested.
-        // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
-        if (a == 0) {
-            return true;
-        }
-
-        uint256 c = a * b;
-        if (c / a == b)
-            return true;
-        else 
-            return false;
-    }
-
-    /**
-    * @dev Subtracts two numbers, return false on overflow (i.e. if subtrahend is greater than minuend).
-    */
-    function checkSub(uint256 a, uint256 b) internal pure returns (bool) {
-        if (b <= a)
-            return true;
-        else
-            return false;
-    }
-
-    /**
-    * @dev Adds two numbers, return false on overflow.
-    */
-    function checkAdd(uint256 a, uint256 b) internal pure returns (bool) {
-        uint256 c = a + b;
-        if (c < a)
-            return false;
-        else
-            return true;
-    }
-}
diff --git a/contracts/libraries/TokenLib.sol b/contracts/libraries/TokenLib.sol
index 0c443fb73..ebfd71bf2 100644
--- a/contracts/libraries/TokenLib.sol
+++ b/contracts/libraries/TokenLib.sol
@@ -8,7 +8,6 @@ import "../tokens/SecurityTokenStorage.sol";
 import "../interfaces/ITransferManager.sol";
 import "openzeppelin-solidity/contracts/math/SafeMath.sol";
 import "../modules/PermissionManager/IPermissionManager.sol";
-import "./KindMath.sol";
 
 library TokenLib {