diff --git a/src/Service/ParticipantService.php b/src/Service/ParticipantService.php
index 5908516..be00387 100644
--- a/src/Service/ParticipantService.php
+++ b/src/Service/ParticipantService.php
@@ -15,7 +15,7 @@ use Meritoo\LimeSurvey\ApiClient\Result\Item\Participant;
 use Meritoo\LimeSurvey\ApiClient\Type\MethodType;
 
 /**
- * Serves participants
+ * Service that serves participants
  *
  * @author    Krzysztof Niziol <krzysztof.niziol@meritoo.pl>
  * @copyright Meritoo.pl
diff --git a/tests/Service/ParticipantServiceTest.php b/tests/Service/ParticipantServiceTest.php
index 39b3cb9..305f63a 100644
--- a/tests/Service/ParticipantServiceTest.php
+++ b/tests/Service/ParticipantServiceTest.php
@@ -29,16 +29,16 @@ use PHPUnit_Framework_MockObject_MockObject;
 class ParticipantServiceTest extends BaseTestCase
 {
     /**
-     * Serves participants.
-     * Service without participants.
+     * Service that serves participants.
+     * Without participants.
      *
      * @var ParticipantService
      */
     private $serviceWithoutParticipants;
 
     /**
-     * Serves participants.
-     * Service with participants.
+     * Service that serves participants.
+     * With participants.
      *
      * @var ParticipantService
      */