diff --git a/src/BackendBehaviors.php b/src/BackendBehaviors.php
index da1cb70..55161f2 100644
--- a/src/BackendBehaviors.php
+++ b/src/BackendBehaviors.php
@@ -82,7 +82,7 @@ class BackendBehaviors
         '</div>';
     }
 
-    private static function modulesList($modules, $repos)
+    private static function modulesList(array $modules, array $repos): void
     {
         echo
         '<div class="table-outer">' .
diff --git a/src/CsvStoreParser.php b/src/CsvStoreParser.php
index a45c0a8..b500451 100644
--- a/src/CsvStoreParser.php
+++ b/src/CsvStoreParser.php
@@ -19,7 +19,7 @@ use dcStoreParser;
 class CsvStoreParser extends dcStoreParser
 {
     # overwrite dcStoreParser to bypasse current dotclear version
-    protected function _parse()
+    protected function _parse(): void
     {
         if (empty($this->xml->module)) {
             return;