diff --git a/README.md b/README.md
index fc9837e..e034a25 100644
--- a/README.md
+++ b/README.md
@@ -23,13 +23,12 @@ Create a `config/enforce-password.php` with the following contents:
 return [
     'passwordMinLength'     => 16,
     'passwordMaxLength'     => 255,
-    'passwordHistoryLimit'  => 5, // Number of passwords kept in history
+    'passwordHistoryLimit'  => 5, // Number of passwords kept in history, set to 0 to disable this feature
     'passwordMaxLifetime'   => 90, // Number of days a password can be used
     'enforceUppercase'      => true, // Min 1 uppercase letter 
     'enforceLowercase'      => true, // Min 1 lowercase letter
     'enforceDigit'          => true, // Min 1 digit
     'enforceSymbol'         => true, // Min 1 symbol
-    'enforceUniquePassword' => true; // An password never used before by the user
 ];
 ```
 
diff --git a/src/models/Settings.php b/src/models/Settings.php
index b5f8834..6f0bfea 100644
--- a/src/models/Settings.php
+++ b/src/models/Settings.php
@@ -8,11 +8,10 @@ class Settings extends Model
 {
     public $passwordMinLength = 16;
     public $passwordMaxLength = 255;
-    public $passwordHistoryLimit = 5; // Number of passwords kept in history
+    public $passwordHistoryLimit = 5; // Number of passwords kept in history, set to 0 to disable this feature
     public $passwordMaxLifetime = 90; // Number of days a password can be used
     public $enforceUppercase = true; // Min 1 uppercase letter 
     public $enforceLowercase = true; // Min 1 lowercase letter
     public $enforceDigit = true; // Min 1 digit
     public $enforceSymbol = true; // Min 1 symbol
-    public $enforceUniquePassword = true; // An password never used before by the user
 }
diff --git a/src/services/Security.php b/src/services/Security.php
index f311b3e..28fafd6 100644
--- a/src/services/Security.php
+++ b/src/services/Security.php
@@ -44,7 +44,7 @@ public function validatePassword(User $user, string $password)
             $user->addError('newPassword', Craft::t('enforce-password', "Password can't be the same as your username or email."));
         }
 
-        if ($settings->enforceUniquePassword && EnforcePassword::$plugin->history->isPasswordUsed($user, $password)) {
+        if (EnforcePassword::$plugin->history->isPasswordUsed($user, $password)) {
             $user->addError('newPassword', Craft::t('enforce-password', "Please choose a password you didn't use before."));
         }