diff --git a/src/Model/YamlAlphabetical/YamlSortService.php b/src/Model/YamlAlphabetical/YamlSortService.php
index e822a77..1a4ce23 100644
--- a/src/Model/YamlAlphabetical/YamlSortService.php
+++ b/src/Model/YamlAlphabetical/YamlSortService.php
@@ -67,8 +67,8 @@ private static function sortArrayKeyWithUnderscoresAsFirst(array $yamlArrayData,
         $arrayWithUnderscoreKeys = array_filter($yamlArrayData, [YamlService::class, 'hasArrayKeyUnderscoreAsFirstCharacter'], ARRAY_FILTER_USE_KEY);
         $arrayWithOtherKeys = array_filter($yamlArrayData, [YamlService::class, 'hasNotArrayKeyUnderscoreAsFirstCharacter'], ARRAY_FILTER_USE_KEY);
 
-        uksort($arrayWithUnderscoreKeys, ['self', 'sortArrayAlphabetical']);
-        uksort($arrayWithOtherKeys, ['self', 'sortArrayAlphabetical']);
+        uksort($arrayWithUnderscoreKeys, [__CLASS__, 'sortArrayAlphabetical']);
+        uksort($arrayWithOtherKeys, [__CLASS__, 'sortArrayAlphabetical']);
 
         $arrayData = array_merge($arrayWithUnderscoreKeys, $arrayWithOtherKeys);
 
diff --git a/src/Model/YamlInline/YamlInlineChecker.php b/src/Model/YamlInline/YamlInlineChecker.php
index 9523cf4..dcff2c8 100644
--- a/src/Model/YamlInline/YamlInlineChecker.php
+++ b/src/Model/YamlInline/YamlInlineChecker.php
@@ -30,8 +30,8 @@ public function check(string $pathToFile, StandardParametersData $standardParame
         $yamlLines = explode("\n", $yamlContent);
         $lastYamlElement = end($yamlLines);
         $filteredYamlLines = array_filter($yamlLines, [YamlService::class, 'isLineNotBlank']);
-        $filteredYamlLines = array_filter($filteredYamlLines, ['self', 'removeCommentLine']);
-        $filteredYamlLines = array_map(['self', 'removeComments'], $filteredYamlLines);
+        $filteredYamlLines = array_filter($filteredYamlLines, [__CLASS__, 'removeCommentLine']);
+        $filteredYamlLines = array_map([__CLASS__, 'removeComments'], $filteredYamlLines);
         if (YamlService::isLineBlank($lastYamlElement)) {
             $filteredYamlLines[] = '';
         }