diff --git a/CHANGELOG b/CHANGELOG
index a67900bc2c8..ee84b509e97 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,5 +1,6 @@
 UNRELEASED CHANGES:
 
+* Add validation when changing email address
 * Add ability to change account's password in the settings
 
 RELEASED VERSIONS:
diff --git a/app/Http/Requests/SettingsRequest.php b/app/Http/Requests/SettingsRequest.php
index 7d1020fc537..ede17f3a200 100644
--- a/app/Http/Requests/SettingsRequest.php
+++ b/app/Http/Requests/SettingsRequest.php
@@ -26,7 +26,7 @@ public function rules()
         return [
             'first_name' => 'required|max:255',
             'last_name' => 'required|max:255',
-            'email' => 'required|email|max:2083',
+            'email' => 'required|email|max:2083|unique:users,email',
             'timezone' => '',
             'layout' => '',
             'locale' => '',