diff --git a/test/config.tests.js b/test/config.tests.js
index 035a5d6..6a0ee81 100644
--- a/test/config.tests.js
+++ b/test/config.tests.js
@@ -15,7 +15,7 @@ describe('config', () => {
         xdgBasedirConfigStub = sandbox.stub();
     });
 
-    afterEach(function() {
+    afterEach(() => {
         sandbox.restore();
     });
 
diff --git a/test/swm.tests.js b/test/swm.tests.js
index 2a212c4..a8c0165 100644
--- a/test/swm.tests.js
+++ b/test/swm.tests.js
@@ -11,7 +11,7 @@ describe('swm', () => {
         sandbox = sinon.sandbox.create();
     });
 
-    afterEach(function() {
+    afterEach(() => {
         sandbox.restore();
     });
 
@@ -149,7 +149,7 @@ describe('swm', () => {
         });
     });
 
-    describe('executePostCmd', function() {
+    describe('executePostCmd', () => {
         let execStub;
         let swm;