diff --git a/src/adapters/index.js b/src/adapters/index.js
index 7a6e0ce..036f061 100644
--- a/src/adapters/index.js
+++ b/src/adapters/index.js
@@ -28,7 +28,7 @@ class Adapters {
     this.passport = new Passport()
     this.nodemailer = new Nodemailer()
     this.jsonFiles = new JSONFiles()
-    this.bchjs = new BCHJS()
+    this.bchjs = new BCHJS({ restURL: config.apiServer })
     this.config = config
     this.wallet = new Wallet(localConfig)
 
diff --git a/test/unit/adapters/adapters-index-unit.js b/test/unit/adapters/adapters-index-unit.js
index 328f2bb..0f52e11 100644
--- a/test/unit/adapters/adapters-index-unit.js
+++ b/test/unit/adapters/adapters-index-unit.js
@@ -14,13 +14,14 @@ describe('#adapters', () => {
   let uut, sandbox
 
   beforeEach(() => {
-    uut = new Adapters()
-
     sandbox = sinon.createSandbox()
+    uut = new Adapters()
   })
 
   afterEach(() => {
-    sandbox.restore()
+    if (sandbox) {
+      sandbox.restore()
+    }
   })
 
   describe('#start', () => {
diff --git a/test/unit/misc/config.js b/test/unit/misc/config.js
index 54bce08..b1919d6 100644
--- a/test/unit/misc/config.js
+++ b/test/unit/misc/config.js
@@ -10,15 +10,23 @@ describe('#config', () => {
   before(() => {
     // Backup the current environment setting.
     currentEnv = process.env.SVC_ENV
+    // Clear SVC_ENV for the first test to ensure default behavior
+    delete process.env.SVC_ENV
   })
 
   after(() => {
     // Restore the environment setting before starting these tests.
-    process.env.SVC_ENV = currentEnv
+    if (currentEnv) {
+      process.env.SVC_ENV = currentEnv
+    } else {
+      delete process.env.SVC_ENV
+    }
   })
 
   it('Should return development environment config by default', async () => {
-    const importedConfig = await import('../../../config/index.js')
+    // Ensure SVC_ENV is not set for this test
+    delete process.env.SVC_ENV
+    const importedConfig = await import('../../../config/index.js?foo=bar0')
     const config = importedConfig.default
     // console.log('config: ', config)
 
diff --git a/test/unit/mocks/adapters/wallet.js b/test/unit/mocks/adapters/wallet.js
index 09e8378..38f18f1 100644
--- a/test/unit/mocks/adapters/wallet.js
+++ b/test/unit/mocks/adapters/wallet.js
@@ -17,7 +17,7 @@ class MockBchWallet {
         this.walletInfoPromise = true;
         this.walletInfo = mockWallet;
         this.initialize = async () => {}
-        this.bchjs = new BCHJS();
+        this.bchjs = new BCHJS({ restURL: 'https://free-bch.fullstack.cash/' });
         this.burnTokens = async () => {
             return { success: true, txid: 'txid' };
         };