diff --git a/src/Paginator/Adapter/AbstractAdapter.php b/src/Paginator/Adapter/AbstractAdapter.php
index 3437f8e87..c351effd1 100644
--- a/src/Paginator/Adapter/AbstractAdapter.php
+++ b/src/Paginator/Adapter/AbstractAdapter.php
@@ -43,9 +43,9 @@ abstract class AbstractAdapter implements AdapterInterface
     /**
      * Repository for pagination
      *
-     * @var RepositoryInterface|null
+     * @var RepositoryInterface
      */
-    protected ?RepositoryInterface $repository = null;
+    protected RepositoryInterface $repository;
 
     /**
      * Phalcon\Paginator\Adapter\AbstractAdapter constructor
diff --git a/src/Paginator/RepositoryInterface.php b/src/Paginator/RepositoryInterface.php
index 6a6b1bc11..3401f0aaf 100644
--- a/src/Paginator/RepositoryInterface.php
+++ b/src/Paginator/RepositoryInterface.php
@@ -19,14 +19,14 @@
  */
 interface RepositoryInterface
 {
-    public const PROPERTY_CURRENT_PAGE  = 'current';
-    public const PROPERTY_FIRST_PAGE    = 'first';
-    public const PROPERTY_ITEMS         = 'items';
-    public const PROPERTY_LAST_PAGE     = 'last';
-    public const PROPERTY_LIMIT         = 'limit';
-    public const PROPERTY_NEXT_PAGE     = 'next';
-    public const PROPERTY_PREVIOUS_PAGE = 'previous';
-    public const PROPERTY_TOTAL_ITEMS   = 'total_items';
+    public const PROPERTY_CURRENT_PAGE  = "current";
+    public const PROPERTY_FIRST_PAGE    = "first";
+    public const PROPERTY_ITEMS         = "items";
+    public const PROPERTY_LAST_PAGE     = "last";
+    public const PROPERTY_LIMIT         = "limit";
+    public const PROPERTY_NEXT_PAGE     = "next";
+    public const PROPERTY_PREVIOUS_PAGE = "previous";
+    public const PROPERTY_TOTAL_ITEMS   = "total_items";
 
     /**
      * Gets the aliases for properties repository