diff --git a/app/Contribution/DvData.php b/app/Contribution/DvData.php
index 8a70812c..c38f1298 100644
--- a/app/Contribution/DvData.php
+++ b/app/Contribution/DvData.php
@@ -20,7 +20,7 @@ class DvData extends Data implements PdfRepository
         public ?Country $country,
         public array $members,
         public ?string $filename = '',
-        public $type = 'F',
+        public string $type = 'F',
     ) {
     }
 
diff --git a/app/Contribution/SolingenData.php b/app/Contribution/SolingenData.php
index 41b5266d..e759f66b 100644
--- a/app/Contribution/SolingenData.php
+++ b/app/Contribution/SolingenData.php
@@ -19,7 +19,7 @@ class SolingenData extends Data implements PdfRepository
         public string $dateUntil,
         public array $members,
         public ?string $filename = '',
-        public $type = 'F',
+        public string $type = 'F',
     ) {
     }