diff --git a/Tests/ChoiceList/Factory/CachingFactoryDecoratorTest.php b/Tests/ChoiceList/Factory/CachingFactoryDecoratorTest.php
index 2668d72ed..67e86208c 100644
--- a/Tests/ChoiceList/Factory/CachingFactoryDecoratorTest.php
+++ b/Tests/ChoiceList/Factory/CachingFactoryDecoratorTest.php
@@ -577,7 +577,7 @@ public static function provideDistinguishedChoices()
         ];
     }
 
-    public function provideSameKeyChoices()
+    public static function provideSameKeyChoices()
     {
         // Only test types here that can be used as array keys
         return [
@@ -588,7 +588,7 @@ public function provideSameKeyChoices()
         ];
     }
 
-    public function provideDistinguishedKeyChoices()
+    public static function provideDistinguishedKeyChoices()
     {
         // Only test types here that can be used as array keys
         return [