diff --git a/packages/toolkit/src/test/srcShared/fs.test.ts b/packages/toolkit/src/test/srcShared/fs.test.ts
index 217aa1a01ec..1345d36d8b9 100644
--- a/packages/toolkit/src/test/srcShared/fs.test.ts
+++ b/packages/toolkit/src/test/srcShared/fs.test.ts
@@ -24,17 +24,17 @@ describe('FileSystem', function () {
 
     before(async function () {
         fakeContext = await FakeExtensionContext.create()
+        sandbox = Sinon.createSandbox()
         await deleteTestRoot() // incase a previous test run failed to clean
     })
 
     beforeEach(async function () {
         await makeTestRoot()
-        sandbox = Sinon.createSandbox()
+        sandbox.restore()
     })
 
     afterEach(async function () {
         await deleteTestRoot()
-        sandbox.restore()
     })
 
     describe('readFileAsString()', function () {