diff --git a/password_policy_characters/src/Plugin/PasswordConstraint/PasswordCharacter.php b/password_policy_characters/src/Plugin/PasswordConstraint/PasswordCharacter.php
index b35023f..49f87d3 100644
--- a/password_policy_characters/src/Plugin/PasswordConstraint/PasswordCharacter.php
+++ b/password_policy_characters/src/Plugin/PasswordConstraint/PasswordCharacter.php
@@ -56,13 +56,13 @@ class PasswordCharacter extends PasswordConstraintBase {
     switch ($configuration['character_type']) {
       case 'uppercase':
         if ($count_upper < $configuration['character_count']) {
-          $validation->setErrorMessage($this->formatPlural($configuration['character_count'], 'Password must contain at least 1 uppercase character.', 'Password must contain at least @count uppercase characters.'));
+          $validation->setErrorMessage($this->formatPlural($configuration['character_count'], 'Password must contain at least 1 uppercase character.', 'Password must contain at least @count unique uppercase characters.'));
         }
         break;
 
       case 'lowercase':
         if ($count_lower < $configuration['character_count']) {
-          $validation->setErrorMessage($this->formatPlural($configuration['character_count'], 'Password must contain at least 1 lowercase character.', 'Password must contain at least @count lowercase characters.'));
+          $validation->setErrorMessage($this->formatPlural($configuration['character_count'], 'Password must contain at least 1 lowercase character.', 'Password must contain at least @count unique lowercase characters.'));
         }
         break;