diff --git a/js/tests/unit/tab.spec.js b/js/tests/unit/tab.spec.js
index e0c7d86a60..896e611801 100644
--- a/js/tests/unit/tab.spec.js
+++ b/js/tests/unit/tab.spec.js
@@ -603,19 +603,19 @@ describe('Tab', () => {
         '</div>'
       ].join('')
 
-      const tabEl = fixtureEl.querySelector('#tab1')
+      const tabEl1 = fixtureEl.querySelector('#tab1')
       const tabEl2 = fixtureEl.querySelector('#tab2')
       const tabEl3 = fixtureEl.querySelector('#tab3')
       const tabEl4 = fixtureEl.querySelector('#tab4')
-      const tab = new Tab(tabEl)
+      const tab1 = new Tab(tabEl1)
       const tab2 = new Tab(tabEl2)
       const tab3 = new Tab(tabEl3)
       const tab4 = new Tab(tabEl4)
-      const spy1 = spyOn(tab, 'show').and.callThrough()
+      const spy1 = spyOn(tab1, 'show').and.callThrough()
       const spy2 = spyOn(tab2, 'show').and.callThrough()
       const spy3 = spyOn(tab3, 'show').and.callThrough()
       const spy4 = spyOn(tab4, 'show').and.callThrough()
-      const spyFocus1 = spyOn(tabEl, 'focus').and.callThrough()
+      const spyFocus1 = spyOn(tabEl1, 'focus').and.callThrough()
       const spyFocus2 = spyOn(tabEl2, 'focus').and.callThrough()
       const spyFocus3 = spyOn(tabEl3, 'focus').and.callThrough()
       const spyFocus4 = spyOn(tabEl4, 'focus').and.callThrough()
@@ -623,7 +623,7 @@ describe('Tab', () => {
       const keydown = createEvent('keydown')
       keydown.key = 'ArrowRight'
 
-      tabEl.dispatchEvent(keydown)
+      tabEl1.dispatchEvent(keydown)
       expect(spy1).not.toHaveBeenCalled()
       expect(spy2).not.toHaveBeenCalled()
       expect(spy3).not.toHaveBeenCalled()
@@ -644,19 +644,19 @@ describe('Tab', () => {
         '</div>'
       ].join('')
 
-      const tabEl = fixtureEl.querySelector('#tab1')
+      const tabEl1 = fixtureEl.querySelector('#tab1')
       const tabEl2 = fixtureEl.querySelector('#tab2')
       const tabEl3 = fixtureEl.querySelector('#tab3')
       const tabEl4 = fixtureEl.querySelector('#tab4')
-      const tab = new Tab(tabEl)
+      const tab1 = new Tab(tabEl1)
       const tab2 = new Tab(tabEl2)
       const tab3 = new Tab(tabEl3)
       const tab4 = new Tab(tabEl4)
-      const spy1 = spyOn(tab, 'show').and.callThrough()
+      const spy1 = spyOn(tab1, 'show').and.callThrough()
       const spy2 = spyOn(tab2, 'show').and.callThrough()
       const spy3 = spyOn(tab3, 'show').and.callThrough()
       const spy4 = spyOn(tab4, 'show').and.callThrough()
-      const spyFocus1 = spyOn(tabEl, 'focus').and.callThrough()
+      const spyFocus1 = spyOn(tabEl1, 'focus').and.callThrough()
       const spyFocus2 = spyOn(tabEl2, 'focus').and.callThrough()
       const spyFocus3 = spyOn(tabEl3, 'focus').and.callThrough()
       const spyFocus4 = spyOn(tabEl4, 'focus').and.callThrough()