diff --git a/src/Setting/Service/ModuleSettingService.php b/src/Setting/Service/ModuleSettingService.php
index 4c07f18..4ceec20 100644
--- a/src/Setting/Service/ModuleSettingService.php
+++ b/src/Setting/Service/ModuleSettingService.php
@@ -99,13 +99,11 @@ public function changeStringSetting(ID $name, string $value, string $moduleId):
 
     public function changeCollectionSetting(ID $name, string $value, string $moduleId): StringSetting
     {
-        $arrayValue = json_decode($value, true);
-
-        if (!is_array($arrayValue) || json_last_error() !== JSON_ERROR_NONE) {
-            throw new InvalidCollection($value);
-        }
-
-        $this->moduleSettingRepository->saveCollectionSetting((string)$name, $arrayValue, $moduleId);
+        $this->moduleSettingRepository->saveCollectionSetting(
+            (string)$name,
+            $this->jsonService->jsonDecodeCollection($value),
+            $moduleId
+        );
 
         return $this->getCollectionSetting($name, $moduleId);
     }
diff --git a/tests/Codeception/Acceptance/ModuleSettingMutationsCest.php b/tests/Codeception/Acceptance/ModuleSettingMutationsCest.php
index 04eae60..5b272db 100644
--- a/tests/Codeception/Acceptance/ModuleSettingMutationsCest.php
+++ b/tests/Codeception/Acceptance/ModuleSettingMutationsCest.php
@@ -160,6 +160,6 @@ public function testChangeCollectionSettingAuthorized(AcceptanceTester $I): void
 
         $setting = $result['data']['changeModuleSettingCollection'];
         $I->assertSame('arraySetting', $setting['name']);
-        $I->assertSame('[3, "interesting", "values"]', $setting['value']);
+        $I->assertSame('[3,"interesting","values"]', $setting['value']);
     }
 }
diff --git a/tests/Unit/Service/ModuleSettingServiceTest.php b/tests/Unit/Service/ModuleSettingServiceTest.php
index 63d25f4..5a83516 100644
--- a/tests/Unit/Service/ModuleSettingServiceTest.php
+++ b/tests/Unit/Service/ModuleSettingServiceTest.php
@@ -243,47 +243,19 @@ public function testChangeModuleSettingString(): void
         $this->assertSame($repositoryValue, $setting->getValue());
     }
 
-    /**
-     * @dataProvider invalidCollectionDataProvider
-     */
-    public function testChangeModuleSettingInvalidCollection($value): void
-    {
-        $repository = $this->createMock(ModuleSettingRepositoryInterface::class);
-
-        $settingService = $this->getSut($repository);
-
-        $nameID = new ID('collectionSetting');
-
-        $this->expectException(InvalidCollection::class);
-        $this->expectExceptionMessage(sprintf('%s is not a valid collection string.', $value));
-
-        $settingService->changeCollectionSetting($nameID, $value, 'awesomeModule');
-    }
-
-    public function invalidCollectionDataProvider(): array
-    {
-        return [
-            ['[2, "values"'],
-            ['{2, "values"}'],
-            ['2, "values"}'],
-            ['[2, values]'],
-            ['"3, interesting, values"'],
-            ['"3, \'interesting\', \'values\'"'],
-        ];
-    }
-
     public function testChangeModuleSettingCollection(): void
     {
         $name = 'collectionSetting';
         $moduleId = 'awesomeModule';
 
-        $callValue = '[2, "values"]';
+        $callValue = 'someCollectionValue';
         $repositoryValue = ['realDatabaseValue'];
 
+        $decodedValue = ['decodedCollectionValue'];
         $repository = $this->createMock(ModuleSettingRepositoryInterface::class);
         $repository->expects($this->once())
             ->method('saveCollectionSetting')
-            ->with($name, json_decode($callValue), $moduleId);
+            ->with($name, $decodedValue, $moduleId);
         $repository->method('getCollectionSetting')
             ->with($name, $moduleId)
             ->willReturn($repositoryValue);
@@ -293,6 +265,9 @@ public function testChangeModuleSettingCollection(): void
         $encoder->method('jsonEncodeArray')
             ->with($repositoryValue)
             ->willReturn($encoderResponse);
+        $encoder->method('jsonDecodeCollection')
+            ->with($callValue)
+            ->willReturn($decodedValue);
 
         $sut = $this->getSut(
             repository: $repository,