diff --git a/test/parallel/test-writeuint.js b/test/parallel/test-writeuint.js
index e91e1d256d0261..5a2f2da9da75e8 100644
--- a/test/parallel/test-writeuint.js
+++ b/test/parallel/test-writeuint.js
@@ -129,10 +129,10 @@ function testUint(clazz) {
   // Test 0 to 5 bytes.
   for (let i = 0; i <= 5; i++) {
     const errmsg = `byteLength: ${i}`;
-    assert.throws(function() {
+    assert.throws(() => {
       data.writeUIntBE(val, 0, i);
     }, /"value" argument is out of bounds/, errmsg);
-    assert.throws(function() {
+    assert.throws(() => {
       data.writeUIntLE(val, 0, i);
     }, /"value" argument is out of bounds/, errmsg);
     val *= 0x100;