diff --git a/src/libs/TypedBigNumber.ts b/src/libs/TypedBigNumber.ts
index c6893f0..98f6699 100644
--- a/src/libs/TypedBigNumber.ts
+++ b/src/libs/TypedBigNumber.ts
@@ -274,7 +274,7 @@ class TypedBigNumber {
     });
 
     // If the return string is -0.00 or some variant, strip the negative
-    if (displayString.match(/-0\.?[0]*/)) {
+    if (displayString.match(/-0\.?[0]*$/)) {
       return displayString.replace('-', '');
     }
 
diff --git a/tests/integration/transactions.test.ts b/tests/integration/transactions.test.ts
index a832e62..0ad8eda 100644
--- a/tests/integration/transactions.test.ts
+++ b/tests/integration/transactions.test.ts
@@ -1,43 +1,43 @@
-import {expect} from 'chai';
-import Notional, { TypedBigNumber } from '../../src';
+import { expect } from 'chai';
 import { ethers } from 'hardhat';
-import { getAccount, setChainState } from './utils';
 import { SignerWithAddress } from '@nomiclabs/hardhat-ethers/signers';
 import { BigNumber } from 'ethers';
+import { getAccount, setChainState } from './utils';
+import Notional, { TypedBigNumber } from '../../src';
 
 const forkedBlockNumber = 15104800;
-const DAI_WHALE = "0x8B64fA5Fd129df9c755eB82dB1e16D6D0Bdf5Bc3"
+const DAI_WHALE = '0x8B64fA5Fd129df9c755eB82dB1e16D6D0Bdf5Bc3';
 
 describe('transactions', () => {
   let notional: Notional;
-  let daiWhale: SignerWithAddress; 
+  let daiWhale: SignerWithAddress;
 
   beforeEach(async () => {
     await setChainState(forkedBlockNumber);
     daiWhale = await getAccount(DAI_WHALE);
 
     if (notional === undefined) {
-      const provider = new ethers.providers.JsonRpcBatchProvider("http://localhost:8545")
-      notional = await Notional.load(1, provider)
+      const provider = new ethers.providers.JsonRpcBatchProvider('http://localhost:8545');
+      notional = await Notional.load(1, provider);
     }
-  })
+  });
 
   it('executes a batch lend transaction', async () => {
-    const contract = notional.system.getCurrencyBySymbol("DAI").underlyingContract
-    await contract?.connect(daiWhale).approve(notional.system.getNotionalProxy().address, ethers.constants.MaxUint256)
+    const contract = notional.system.getCurrencyBySymbol('DAI').underlyingContract;
+    await contract?.connect(daiWhale).approve(notional.system.getNotionalProxy().address, ethers.constants.MaxUint256);
     const populatedTxn = await notional.batchLend(
       DAI_WHALE,
-      "DAI",
-      TypedBigNumber.fromBalance(10e8, "DAI", true),
+      'DAI',
+      TypedBigNumber.fromBalance(10e8, 'DAI', true),
       1,
       0
-    )
+    );
     // Gas estimation inside hardhat is wrong
-    populatedTxn.gasLimit = BigNumber.from(2_500_000)
-    await daiWhale.sendTransaction(populatedTxn)
-    const { portfolio } = await notional.system.getNotionalProxy().connect(daiWhale).getAccount(DAI_WHALE)
-    expect(portfolio.length).to.equal(1)
-    expect(portfolio[0].currencyId.toNumber()).to.equal(2)
-    expect(portfolio[0].notional.toNumber()).to.equal(10e8)
+    populatedTxn.gasLimit = BigNumber.from(2_500_000);
+    await daiWhale.sendTransaction(populatedTxn);
+    const { portfolio } = await notional.system.getNotionalProxy().connect(daiWhale).getAccount(DAI_WHALE);
+    expect(portfolio.length).to.equal(1);
+    expect(portfolio[0].currencyId.toNumber()).to.equal(2);
+    expect(portfolio[0].notional.toNumber()).to.equal(10e8);
   });
 });
diff --git a/yarn.lock b/yarn.lock
index 0c01b0e..c8b2270 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -560,10 +560,10 @@
     "@ethersproject/properties" "^5.0.3"
     "@ethersproject/strings" "^5.0.4"
 
-"@ethersproject/abi@5.6.3", "@ethersproject/abi@^5.6.3":
-  version "5.6.3"
-  resolved "https://registry.yarnpkg.com/@ethersproject/abi/-/abi-5.6.3.tgz#2d643544abadf6e6b63150508af43475985c23db"
-  integrity sha512-CxKTdoZY4zDJLWXG6HzNH6znWK0M79WzzxHegDoecE3+K32pzfHOzuXg2/oGSTecZynFgpkjYXNPOqXVJlqClw==
+"@ethersproject/abi@5.6.4":
+  version "5.6.4"
+  resolved "https://registry.yarnpkg.com/@ethersproject/abi/-/abi-5.6.4.tgz#f6e01b6ed391a505932698ecc0d9e7a99ee60362"
+  integrity sha512-TTeZUlCeIHG6527/2goZA6gW5F8Emoc7MrZDC7hhP84aRGvW3TEdTnZR08Ls88YXM1m2SuK42Osw/jSi3uO8gg==
   dependencies:
     "@ethersproject/address" "^5.6.1"
     "@ethersproject/bignumber" "^5.6.2"
@@ -590,6 +590,21 @@
     "@ethersproject/properties" "^5.5.0"
     "@ethersproject/strings" "^5.5.0"
 
+"@ethersproject/abi@^5.6.3":
+  version "5.6.3"
+  resolved "https://registry.yarnpkg.com/@ethersproject/abi/-/abi-5.6.3.tgz#2d643544abadf6e6b63150508af43475985c23db"
+  integrity sha512-CxKTdoZY4zDJLWXG6HzNH6znWK0M79WzzxHegDoecE3+K32pzfHOzuXg2/oGSTecZynFgpkjYXNPOqXVJlqClw==
+  dependencies:
+    "@ethersproject/address" "^5.6.1"
+    "@ethersproject/bignumber" "^5.6.2"
+    "@ethersproject/bytes" "^5.6.1"
+    "@ethersproject/constants" "^5.6.1"
+    "@ethersproject/hash" "^5.6.1"
+    "@ethersproject/keccak256" "^5.6.1"
+    "@ethersproject/logger" "^5.6.0"
+    "@ethersproject/properties" "^5.6.0"
+    "@ethersproject/strings" "^5.6.1"
+
 "@ethersproject/abstract-provider@5.6.1", "@ethersproject/abstract-provider@^5.6.1":
   version "5.6.1"
   resolved "https://registry.yarnpkg.com/@ethersproject/abstract-provider/-/abstract-provider-5.6.1.tgz#02ddce150785caf0c77fe036a0ebfcee61878c59"
@@ -927,10 +942,10 @@
   resolved "https://registry.yarnpkg.com/@ethersproject/logger/-/logger-5.5.0.tgz#0c2caebeff98e10aefa5aef27d7441c7fd18cf5d"
   integrity sha512-rIY/6WPm7T8n3qS2vuHTUBPdXHl+rGxWxW5okDfo9J4Z0+gRRZT0msvUdIJkE4/HS29GUMziwGaaKO2bWONBrg==
 
-"@ethersproject/networks@5.6.3", "@ethersproject/networks@^5.6.3":
-  version "5.6.3"
-  resolved "https://registry.yarnpkg.com/@ethersproject/networks/-/networks-5.6.3.tgz#3ee3ab08f315b433b50c99702eb32e0cf31f899f"
-  integrity sha512-QZxRH7cA5Ut9TbXwZFiCyuPchdWi87ZtVNHWZd0R6YFgYtes2jQ3+bsslJ0WdyDe0i6QumqtoYqvY3rrQFRZOQ==
+"@ethersproject/networks@5.6.4":
+  version "5.6.4"
+  resolved "https://registry.yarnpkg.com/@ethersproject/networks/-/networks-5.6.4.tgz#51296d8fec59e9627554f5a8a9c7791248c8dc07"
+  integrity sha512-KShHeHPahHI2UlWdtDMn2lJETcbtaJge4k7XSjDR9h79QTd6yQJmv6Cp2ZA4JdqWnhszAOLSuJEd9C0PRw7hSQ==
   dependencies:
     "@ethersproject/logger" "^5.6.0"
 
@@ -948,6 +963,13 @@
   dependencies:
     "@ethersproject/logger" "^5.5.0"
 
+"@ethersproject/networks@^5.6.3":
+  version "5.6.3"
+  resolved "https://registry.yarnpkg.com/@ethersproject/networks/-/networks-5.6.3.tgz#3ee3ab08f315b433b50c99702eb32e0cf31f899f"
+  integrity sha512-QZxRH7cA5Ut9TbXwZFiCyuPchdWi87ZtVNHWZd0R6YFgYtes2jQ3+bsslJ0WdyDe0i6QumqtoYqvY3rrQFRZOQ==
+  dependencies:
+    "@ethersproject/logger" "^5.6.0"
+
 "@ethersproject/pbkdf2@5.6.1", "@ethersproject/pbkdf2@^5.6.1":
   version "5.6.1"
   resolved "https://registry.yarnpkg.com/@ethersproject/pbkdf2/-/pbkdf2-5.6.1.tgz#f462fe320b22c0d6b1d72a9920a3963b09eb82d1"
@@ -3345,12 +3367,12 @@ ethereumjs-util@^7.1.5:
     ethereum-cryptography "^0.1.3"
     rlp "^2.2.4"
 
-ethers@5.6.8:
-  version "5.6.8"
-  resolved "https://registry.yarnpkg.com/ethers/-/ethers-5.6.8.tgz#d36b816b4896341a80a8bbd2a44e8cb6e9b98dd4"
-  integrity sha512-YxIGaltAOdvBFPZwIkyHnXbW40f1r8mHUgapW6dxkO+6t7H6wY8POUn0Kbxrd/N7I4hHxyi7YCddMAH/wmho2w==
+ethers@5.6.9:
+  version "5.6.9"
+  resolved "https://registry.yarnpkg.com/ethers/-/ethers-5.6.9.tgz#4e12f8dfcb67b88ae7a78a9519b384c23c576a4d"
+  integrity sha512-lMGC2zv9HC5EC+8r429WaWu3uWJUCgUCt8xxKCFqkrFuBDZXDYIdzDUECxzjf2BMF8IVBByY1EBoGSL3RTm8RA==
   dependencies:
-    "@ethersproject/abi" "5.6.3"
+    "@ethersproject/abi" "5.6.4"
     "@ethersproject/abstract-provider" "5.6.1"
     "@ethersproject/abstract-signer" "5.6.2"
     "@ethersproject/address" "5.6.1"
@@ -3365,7 +3387,7 @@ ethers@5.6.8:
     "@ethersproject/json-wallets" "5.6.1"
     "@ethersproject/keccak256" "5.6.1"
     "@ethersproject/logger" "5.6.0"
-    "@ethersproject/networks" "5.6.3"
+    "@ethersproject/networks" "5.6.4"
     "@ethersproject/pbkdf2" "5.6.1"
     "@ethersproject/properties" "5.6.0"
     "@ethersproject/providers" "5.6.8"