diff --git a/src/Plugin/monitoring/SensorPlugin/UserIntegritySensorPlugin.php b/src/Plugin/monitoring/SensorPlugin/UserIntegritySensorPlugin.php
index 836b06c..b896916 100644
--- a/src/Plugin/monitoring/SensorPlugin/UserIntegritySensorPlugin.php
+++ b/src/Plugin/monitoring/SensorPlugin/UserIntegritySensorPlugin.php
@@ -90,7 +90,7 @@ class UserIntegritySensorPlugin extends SensorPluginBase implements ExtendedInfo
     $role_ids_after = array_intersect($role_ids, ['authenticated', 'anonymous']);
     $role_labels = [];
     foreach (Role::loadMultiple($role_ids_after) as $role) {
-      $role_labels[$role->id()] = $role->label() . 's';
+      $role_labels[$role->id()] = $role->label();
     }
 
     if (!empty($role_labels)) {
diff --git a/src/Tests/MonitoringCoreWebTest.php b/src/Tests/MonitoringCoreWebTest.php
index 2a0120a..c806e73 100644
--- a/src/Tests/MonitoringCoreWebTest.php
+++ b/src/Tests/MonitoringCoreWebTest.php
@@ -190,31 +190,31 @@ class MonitoringCoreWebTest extends MonitoringTestBase {
     $this->assertTrue($result->isWarning());
 
     // Count users included admin.
-    $this->assertEqual($result->getMessage(), '3 privileged user(s), Privileged access for roles Authenticated users');
+    $this->assertEqual($result->getMessage(), '3 privileged user(s), Privileged access for roles Authenticated user');
 
     // Add permissions to anonymous user and check the sensor.
     user_role_grant_permissions(RoleInterface::ANONYMOUS_ID, array('administer account settings'));
     $result = $this->runSensor('user_integrity');
-    $this->assertEqual($result->getMessage(), '3 privileged user(s), Privileged access for roles Anonymous users, Authenticated users');
+    $this->assertEqual($result->getMessage(), '3 privileged user(s), Privileged access for roles Anonymous user, Authenticated user');
 
     // Authenticated user with privilege of register.
     \Drupal::configFactory()->getEditable('user.settings')->set('register', 'visitors')->save();
     $result = $this->runSensor('user_integrity');
     $this->assertTrue($result->isCritical());
-    $this->assertEqual($result->getMessage(), '3 privileged user(s), Privileged access for roles Anonymous users, Authenticated users, Self registration possible.');
+    $this->assertEqual($result->getMessage(), '3 privileged user(s), Privileged access for roles Anonymous user, Authenticated user, Self registration possible.');
 
     // Create an authenticated user and test that the sensor counter increments.
     $test_user_third = $this->drupalCreateUser(array(), 'test_user_3');
     \Drupal::keyValue('monitoring.users')->deleteAll();
     $result = $this->runSensor('user_integrity');
-    $this->assertEqual($result->getMessage(), '4 privileged user(s), Privileged access for roles Anonymous users, Authenticated users, Self registration possible.');
+    $this->assertEqual($result->getMessage(), '4 privileged user(s), Privileged access for roles Anonymous user, Authenticated user, Self registration possible.');
 
     $test_user_third->setUsername('changed2');
     $test_user_third->save();
 
     // Check sensor message for user changes.
     $result = $this->runSensor('user_integrity');
-    $this->assertEqual($result->getMessage(), '4 privileged user(s), 1 changed user(s), Privileged access for roles Anonymous users, Authenticated users, Self registration possible.');
+    $this->assertEqual($result->getMessage(), '4 privileged user(s), 1 changed user(s), Privileged access for roles Anonymous user, Authenticated user, Self registration possible.');
 
     // Check sensor message with permissions revoked.
     user_role_revoke_permissions(RoleInterface::ANONYMOUS_ID, array('administer account settings'));