diff --git a/app/Http/Controllers/Chart/PiggyBankController.php b/app/Http/Controllers/Chart/PiggyBankController.php
index 0759c6d5d9..1eab1366f0 100644
--- a/app/Http/Controllers/Chart/PiggyBankController.php
+++ b/app/Http/Controllers/Chart/PiggyBankController.php
@@ -50,8 +50,7 @@ class PiggyBankController extends Controller
             return Response::json($cache->get());
         }
 
-        /** @var Collection $set */
-        $set  = new Collection($repository->getEventSummarySet($piggyBank));
+        $set  = $repository->getEventSummarySet($piggyBank);
         $data = $this->generator->history($set);
         $cache->store($data);
 
diff --git a/app/Repositories/PiggyBank/PiggyBankRepository.php b/app/Repositories/PiggyBank/PiggyBankRepository.php
index 7aa5d6d6e9..c288e8b3a8 100644
--- a/app/Repositories/PiggyBank/PiggyBankRepository.php
+++ b/app/Repositories/PiggyBank/PiggyBankRepository.php
@@ -52,6 +52,7 @@ class PiggyBankRepository implements PiggyBankRepositoryInterface
     public function destroy(PiggyBank $piggyBank): bool
     {
         $piggyBank->delete();
+
         return true;
     }
 
@@ -62,7 +63,9 @@ class PiggyBankRepository implements PiggyBankRepositoryInterface
      */
     public function getEventSummarySet(PiggyBank $piggyBank): Collection
     {
-        return DB::table('piggy_bank_events')->where('piggy_bank_id', $piggyBank->id)->groupBy('date')->get(['date', DB::raw('SUM(`amount`) AS `sum`')]);
+        $var = DB::table('piggy_bank_events')->where('piggy_bank_id', $piggyBank->id)->groupBy('date')->get(['date', DB::raw('SUM(`amount`) AS `sum`')]);
+
+        return new Collection($var);
     }
 
     /**
@@ -130,6 +133,7 @@ class PiggyBankRepository implements PiggyBankRepositoryInterface
             $piggyBank->order = $order;
             $piggyBank->save();
         }
+
         return true;
     }
 
diff --git a/tests/acceptance/Controllers/CsvControllerTest.php b/tests/acceptance/Controllers/CsvControllerTest.php
index 938ed7a15d..6f1e98fe13 100644
--- a/tests/acceptance/Controllers/CsvControllerTest.php
+++ b/tests/acceptance/Controllers/CsvControllerTest.php
@@ -36,7 +36,7 @@ class CsvControllerTest extends TestCase
 
         $data->shouldReceive('getRoles')->once()->andReturn([]);
         $data->shouldReceive('getMap')->once()->andReturn([]);
-        $data->shouldReceive('hasHeaders')->once()->andReturn([]);
+        $data->shouldReceive('hasHeaders')->once()->andReturn(false);
 
         $this->call('GET', '/csv/column_roles');