diff --git a/eth-contracts/contracts/InitializableV2.sol b/eth-contracts/contracts/InitializableV2.sol
index a6186012397..a047ba91b0f 100644
--- a/eth-contracts/contracts/InitializableV2.sol
+++ b/eth-contracts/contracts/InitializableV2.sol
@@ -13,16 +13,27 @@ contract InitializableV2 is Initializable {
     bool private isInitialized;
 
     string private constant ERROR_NOT_INITIALIZED = "InitializableV2: Not initialized";
-    string private constant ERROR_ALREADY_INITIALIZED = "InitializableV2: Already initialized";
 
+    /**
+     * @notice wrapper function around parent contract Initializable's `initializable` modifier
+     *      initializable modifier ensures this function can only be called once by each deployed child contract
+     *      sets isInitialized flag to true to which is used by _requireIsInitialized()
+     */
     function initialize() public initializer {
         isInitialized = true;
     }
 
+    /**
+     * @notice Reverts transaction if isInitialized is false. Used by child contracts to ensure
+     *      contract is initialized before functions can be called.
+     */
     function _requireIsInitialized() internal view {
         require(isInitialized == true, ERROR_NOT_INITIALIZED);
     }
 
+    /**
+     * @notice Exposes isInitialized bool var to child contracts with read-only access
+     */
     function _isInitialized() internal view returns (bool) {
         return isInitialized;
     }