diff --git a/src/Controller/MapAdminController.php b/src/Controller/MapAdminController.php
index 2a10ce9..aff6a7e 100644
--- a/src/Controller/MapAdminController.php
+++ b/src/Controller/MapAdminController.php
@@ -8,6 +8,7 @@ use MapGuesser\Interfaces\Response\IContent;
 use MapGuesser\PersistentData\Model\Challenge;
 use MapGuesser\PersistentData\Model\Map;
 use MapGuesser\PersistentData\Model\Place;
+use MapGuesser\PersistentData\Model\PlaceInChallenge;
 use MapGuesser\PersistentData\PersistentDataManager;
 use MapGuesser\Repository\ChallengeRepository;
 use MapGuesser\Repository\GuessRepository;
diff --git a/src/Repository/UserInChallengeRepository.php b/src/Repository/UserInChallengeRepository.php
index f50c7f8..6e87ce9 100644
--- a/src/Repository/UserInChallengeRepository.php
+++ b/src/Repository/UserInChallengeRepository.php
@@ -76,6 +76,6 @@ class UserInChallengeRepository
         $select->where('user_id', '=', $userId);
         $select->where('challenge_id', '=', $challenge->getId());
 
-        return $select->count();
+        return $select->count() != 0;
     }
 }