diff --git a/src/components/Header/Dropdown.tsx b/src/components/Header/Dropdown.tsx
index 9d3cb82..b21f6e6 100644
--- a/src/components/Header/Dropdown.tsx
+++ b/src/components/Header/Dropdown.tsx
@@ -1,16 +1,19 @@
-import UiIcon from '../UiIcon'
 import React, { useState } from 'react'
+import UiIcon from '../UiIcon'
 
-type Item = {
+interface Item {
   path: string
   title: string
   icon: string
 }
 
-type Divider = {
+interface Divider {
   divider: true
 }
 
+// eslint-disable-next-line no-prototype-builtins
+const isDivider = (item: object) => item.hasOwnProperty('divider')
+
 export interface DropdownProps {
   active?: boolean
   icon: string
@@ -35,24 +38,25 @@ export default function Dropdown({
       onMouseEnter={toggleHover}
       onMouseLeave={toggleHover}
     >
+      {/* eslint-disable-next-line jsx-a11y/anchor-is-valid */}
       <a href="#" onClick={close} className="dropdown-toggle top-nav">
         <UiIcon name={icon} />
         <span className="hidden-sm hidden-md">{title}</span>
-        <span className="caret"></span>
+        <span className="caret" />
       </a>
       <ul className="dropdown-menu" role="menu">
         {items.map((item, index) => {
-          if ((item as Divider).divider) {
-            return <li className="divider" key={index}></li>
-          } else {
-            return (
-              <li>
-                <a href={(item as Item).path} key={index}>
-                  <UiIcon name={(item as Item).icon} /> {(item as Item).title}
-                </a>
-              </li>
-            )
+          if (isDivider(item)) {
+            // eslint-disable-next-line react/no-array-index-key
+            return <li key={`divider-${index}`} className="divider" />
           }
+          return (
+            <li key={(item as Item).title}>
+              <a href={(item as Item).path}>
+                <UiIcon name={(item as Item).icon} /> {(item as Item).title}
+              </a>
+            </li>
+          )
         })}
       </ul>
     </li>
diff --git a/src/components/Header/Header.tsx b/src/components/Header/Header.tsx
index 22e01c6..53a98df 100644
--- a/src/components/Header/Header.tsx
+++ b/src/components/Header/Header.tsx
@@ -21,9 +21,9 @@ export default function Header({ brandImage, dropdowns }: HeaderProps) {
         data-toggle="collapse"
         data-target=".navbar-collapse"
       >
-        <span className="icon-bar"></span>
-        <span className="icon-bar"></span>
-        <span className="icon-bar"></span>
+        <span className="icon-bar" />
+        <span className="icon-bar" />
+        <span className="icon-bar" />
       </button>
       <div className="navbar-collapse collapse disabled">
         <ul className="nav navbar-nav">
diff --git a/src/components/index.ts b/src/components/index.ts
index 9a3a0da..98ec2f1 100644
--- a/src/components/index.ts
+++ b/src/components/index.ts
@@ -1,5 +1,5 @@
 export { default as CubingIcon } from './CubingIcon'
+export { default as EventSelector } from './EventSelector'
 export { default as Footer } from './Footer'
 export { default as Header } from './Header'
 export { default as UiIcon } from './UiIcon'
-export { default as EventSelector } from './EventSelector'