From 1af36a83ca28a35a6c45e4d32517fb27abef66c7 Mon Sep 17 00:00:00 2001
From: Steam Deck User <0xlomonoshka@gmail.com>
Date: Wed, 13 Dec 2023 19:15:50 +0400
Subject: [PATCH] fix don't check allowance when token is native

---
 package.json                              | 2 +-
 src/Unit/Exchange/generateSwapCalldata.ts | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/package.json b/package.json
index 033ae51..476e451 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@orionprotocol/sdk",
-  "version": "0.20.31",
+  "version": "0.20.32",
   "description": "Orion Protocol SDK",
   "main": "./lib/index.cjs",
   "module": "./lib/index.js",
diff --git a/src/Unit/Exchange/generateSwapCalldata.ts b/src/Unit/Exchange/generateSwapCalldata.ts
index f5cacde..cefce17 100644
--- a/src/Unit/Exchange/generateSwapCalldata.ts
+++ b/src/Unit/Exchange/generateSwapCalldata.ts
@@ -357,7 +357,7 @@ async function shouldUseExchangeBalance(
     additionalTransferAmount = amount;
   } else {
     additionalTransferAmount = exchangeBalance >= amount ? 0n : amount - exchangeBalance;
-    if (additionalTransferAmount > exchangeAllowance) {
+    if (srcToken !== ZeroAddress && additionalTransferAmount > exchangeAllowance) {
       throw new Error(
         `Not enough allowance to make swap, allowance - ${exchangeAllowance} needed allowance - ${additionalTransferAmount}`
       );