From 77c77631e1d11b7a331ecc6ec73cce82ef1eb0b4 Mon Sep 17 00:00:00 2001
From: Leonid Logvinov <logvinov.leon@gmail.com>
Date: Wed, 14 Nov 2018 16:03:19 +0100
Subject: Add a comment

---
 .../order-watcher/src/order_watcher/dependent_order_hashes_tracker.ts    | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/order-watcher/src/order_watcher/dependent_order_hashes_tracker.ts b/packages/order-watcher/src/order_watcher/dependent_order_hashes_tracker.ts
index 4c8585985..a956a94db 100644
--- a/packages/order-watcher/src/order_watcher/dependent_order_hashes_tracker.ts
+++ b/packages/order-watcher/src/order_watcher/dependent_order_hashes_tracker.ts
@@ -89,6 +89,7 @@ export class DependentOrderHashesTracker {
                 (decodedMakerAssetData as ERC721AssetData).tokenId,
             );
         }
+        // If makerToken === ZRX then we already removed it and we don't need to remove it again.
         if ((decodedMakerAssetData as ERC20AssetData).tokenAddress !== this._zrxTokenAddress) {
             this._removeFromERC20DependentOrderhashes(signedOrder, this._zrxTokenAddress);
         }
-- 
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