diff --git a/src/index.js b/src/index.js
index 9c70324..b463d19 100644
--- a/src/index.js
+++ b/src/index.js
@@ -288,12 +288,12 @@ class FsDatastore {
    */
   query (q) {
     // glob expects a POSIX path
-    let prefix = q.prefix || '**'
-    let pattern = path
+    const prefix = q.prefix || '**'
+    const pattern = path
       .join(this.path, prefix, '*' + this.opts.extension)
       .split(path.sep)
       .join('/')
-    let files = glob.sync(pattern)
+    const files = glob.sync(pattern)
     let it
     if (!q.keysOnly) {
       it = map(files, async (f) => {
diff --git a/test/index.spec.js b/test/index.spec.js
index 125adbe..4a98ac7 100644
--- a/test/index.spec.js
+++ b/test/index.spec.js
@@ -125,7 +125,7 @@ describe('FsDatastore', () => {
 
   it('query', async () => {
     const fs = new FsStore(path.join(__dirname, 'test-repo', 'blocks'))
-    let res = []
+    const res = []
     for await (const q of fs.query({})) {
       res.push(q)
     }
@@ -138,9 +138,9 @@ describe('FsDatastore', () => {
     const key = new Key('CIQGFTQ7FSI2COUXWWLOQ45VUM2GUZCGAXLWCTOKKPGTUWPXHBNIVOY')
     const expected = fs.readFileSync(path.join(repodir, 'VO', key.toString() + '.data'))
     const flatfs = await ShardingStore.open(fstore)
-    let res = await flatfs.get(key)
-    let queryResult = flatfs.query({})
-    let results = []
+    const res = await flatfs.get(key)
+    const queryResult = flatfs.query({})
+    const results = []
     for await (const result of queryResult) results.push(result)
     expect(results).to.have.length(23)
     expect(res).to.be.eql(expected)