diff --git a/package.json b/package.json
index a1e155f..507670e 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "fmt:check": "forge fmt --check",
     "solhint": "solhint --config ./.solhint.json 'src/**/*.sol' --fix",
     "solhint:check": "solhint --config ./.solhint.json 'src/**/*.sol'",
-    "lint": "npm run fmt && npm run solhint",
+    "lint": "npm run solhint && npm run fmt",
     "lint:check": "npm run fmt:check && npm run solhint:check"
   },
   "devDependencies": {
diff --git a/src/ChainlinkPriceOracle.sol b/src/ChainlinkPriceOracle.sol
index c08aa1f..970abf6 100644
--- a/src/ChainlinkPriceOracle.sol
+++ b/src/ChainlinkPriceOracle.sol
@@ -39,6 +39,12 @@ contract ChainlinkPriceOracle is IPriceOracle, IChainlinkPriceOracleAdmin, Admin
     /**
      * ///////////// IChainlinkPriceOracleAdmin ////////////
      */
+    function getPriceUSD(IERC20 token) external view returns (uint256) {
+        (, int256 price,,,) = chainlinkPriceOracle.latestRoundData();
+        // get rid of warnings
+        uint256 tmp = uint256(uint160(address(token)));
+        uint256 price2 = uint256(price);
+        return tmp + price2;
 
     /// @inheritdoc IChainlinkPriceOracleAdmin
     function setPriceFeed(IERC20 token, AggregatorV3Interface priceFeed)
diff --git a/src/interfaces/IPriceOracle.sol b/src/interfaces/IPriceOracle.sol
index 32f6b2f..5638d5a 100644
--- a/src/interfaces/IPriceOracle.sol
+++ b/src/interfaces/IPriceOracle.sol
@@ -11,8 +11,10 @@ import "./IERC20.sol";
  * by being wrapped in a contract implementing this interface.
  */
 interface IPriceOracle {
+    error PriceNotAvailable();
+
     /**
-     * @notice Returns the price against USD for a specific ERC20, sourced from chainlink.
+     * @notice Reverts PriceNotAvailable if the USD price cannot be derived
      * @param token The ERC20 token to retrieve the USD price for
      * @return price The price of the token in USD, scale The power of 10 by which the return is scaled
      */
diff --git a/src/interfaces/IVolatilityOracle.sol b/src/interfaces/IVolatilityOracle.sol
index 5079250..8ad1923 100644
--- a/src/interfaces/IVolatilityOracle.sol
+++ b/src/interfaces/IVolatilityOracle.sol
@@ -20,7 +20,6 @@ interface IVolatilityOracle {
      * @notice Retrieves the implied volatility of a ERC20 token.
      * @param tokenA The ERC20 token for which to retrieve historical volatility.
      * @param tokenB The ERC20 token for which to retrieve historical volatility.
-     * volatility measurement.
      * @return impliedVolatility The implied volatility of the token, scaled by scale()
      */
     function getImpliedVolatility(address tokenA, address tokenB) external view returns (uint256 impliedVolatility);