diff --git a/test/async.test.js b/test/async.test.js
index a782c586..7c01d357 100644
--- a/test/async.test.js
+++ b/test/async.test.js
@@ -57,8 +57,8 @@ for (let type of ['node', 'browser']) {
 
   nanoidSuite('avoids pool pollution, infinite loop', async () => {
     await nanoid(2.1)
-    const second = await nanoid()
-    const third = await nanoid()
+    let second = await nanoid()
+    let third = await nanoid()
     not.equal(second, third)
   })
 
diff --git a/test/index.test.js b/test/index.test.js
index e5d9fd8d..3dfd563a 100644
--- a/test/index.test.js
+++ b/test/index.test.js
@@ -36,8 +36,8 @@ for (let type of ['node', 'browser']) {
 
   test(`${type} / nanoid / avoids pool pollution, infinite loop`, () => {
     nanoid(2.1)
-    const second = nanoid()
-    const third = nanoid()
+    let second = nanoid()
+    let third = nanoid()
     not.equal(second, third)
   })
 
diff --git a/test/non-secure.test.js b/test/non-secure.test.js
index fbff2a12..f952da64 100644
--- a/test/non-secure.test.js
+++ b/test/non-secure.test.js
@@ -58,8 +58,8 @@ test('nanoid / has flat distribution', () => {
 
 test('nanoid / avoids pool pollution, infinite loop', () => {
   nanoid(2.1)
-  const second = nanoid()
-  const third = nanoid()
+  let second = nanoid()
+  let third = nanoid()
   not.equal(second, third)
 })
 
@@ -99,8 +99,8 @@ test('customAlphabet / avoids pool pollution, infinite loop', () => {
   let ALPHABET = 'abcdefghijklmnopqrstuvwxyz'
   let nanoid2 = customAlphabet(ALPHABET)
   nanoid2(2.1)
-  const second = nanoid2()
-  const third = nanoid2()
+  let second = nanoid2()
+  let third = nanoid2()
   not.equal(second, third)
 })
 
diff --git a/test/react-native-polyfill.test.js b/test/react-native-polyfill.test.js
index 3675efcb..d96e2168 100644
--- a/test/react-native-polyfill.test.js
+++ b/test/react-native-polyfill.test.js
@@ -30,8 +30,8 @@ test('works with polyfill', () => {
 test('nanoid / avoids pool pollution, infinite loop', () => {
   let { nanoid } = require('../index.browser')
   nanoid(2.1)
-  const second = nanoid()
-  const third = nanoid()
+  let second = nanoid()
+  let third = nanoid()
   not.equal(second, third)
 })