diff --git a/src/Security/Voter/ProjectVoter.php b/src/Security/Voter/ProjectVoter.php
index 61c3889..3aaa5d6 100644
--- a/src/Security/Voter/ProjectVoter.php
+++ b/src/Security/Voter/ProjectVoter.php
@@ -37,7 +37,7 @@ final class ProjectVoter extends Voter
         return false;
     }
 
-    private function canEdit(ProjectApiResource $project, User $user): bool
+    private function canEdit(ProjectApiResource $project, ?User $user): bool
     {
         if (!$user instanceof User) {
             return false;