diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7b61bfa..3679622 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 * refactor: remove configuration from API Platform bundle, will try to reuse
   standard API Platform extra properties.
+* feat: throw exception if a boundary value is null
 
 # 0.8.1
 
diff --git a/packages/rekapager-bundle/src/Twig/RekapagerExtension.php b/packages/rekapager-bundle/src/Twig/RekapagerExtension.php
index 1365de5..79ff116 100644
--- a/packages/rekapager-bundle/src/Twig/RekapagerExtension.php
+++ b/packages/rekapager-bundle/src/Twig/RekapagerExtension.php
@@ -20,6 +20,7 @@ class RekapagerExtension extends AbstractExtension
 {
     public function getFunctions(): array
     {
+        /** @psalm-suppress InvalidArgument */
         return [
             new TwigFunction(
                 'rekapager',
@@ -38,7 +39,7 @@ public function getFunctions(): array
         ];
     }
 
-    private function renderInfiniteScrolling(): string
+    public function renderInfiniteScrolling(): string
     {
         return 'data-controller="rekalogika--rekapager-bundle--infinite-scrolling"';
     }
diff --git a/packages/rekapager-contracts/src/Exception/NullBoundaryValueException.php b/packages/rekapager-contracts/src/Exception/NullBoundaryValueException.php
new file mode 100644
index 0000000..abf69b1
--- /dev/null
+++ b/packages/rekapager-contracts/src/Exception/NullBoundaryValueException.php
@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * This file is part of rekalogika/rekapager package.
+ *
+ * (c) Priyadi Iman Nurcahyo <https://rekalogika.dev>
+ *
+ * For the full copyright and license information, please view the LICENSE file
+ * that was distributed with this source code.
+ */
+
+namespace Rekalogika\Contracts\Rekapager\Exception;
+
+class NullBoundaryValueException extends UnexpectedValueException
+{
+}
diff --git a/packages/rekapager-doctrine-collections-adapter/src/Internal/SelectableKeysetItem.php b/packages/rekapager-doctrine-collections-adapter/src/Internal/SelectableKeysetItem.php
index 1aa29f0..04b2fae 100644
--- a/packages/rekapager-doctrine-collections-adapter/src/Internal/SelectableKeysetItem.php
+++ b/packages/rekapager-doctrine-collections-adapter/src/Internal/SelectableKeysetItem.php
@@ -14,6 +14,7 @@
 namespace Rekalogika\Rekapager\Doctrine\Collections\Internal;
 
 use Doctrine\Common\Collections\Expr\ClosureExpressionVisitor;
+use Rekalogika\Contracts\Rekapager\Exception\NullBoundaryValueException;
 use Rekalogika\Rekapager\Keyset\Contracts\KeysetItemInterface;
 
 /**
@@ -66,6 +67,10 @@ public function getValuesForBoundary(): array
             /** @var mixed $value */
             $value = ClosureExpressionVisitor::getObjectFieldValue($this->objectOrArrayValue, $property);
 
+            if ($value === null) {
+                throw new NullBoundaryValueException(sprintf('The property "%s" of the value "%s" is a boundary value of this pagination, but it is found to be null. Null value in a boundary value is not supported.', $property, get_debug_type($value)));
+            }
+
             /** @psalm-suppress MixedAssignment */
             $result[$property] = $value;
         }
diff --git a/packages/rekapager-doctrine-orm-adapter/src/Internal/QueryBuilderKeysetItem.php b/packages/rekapager-doctrine-orm-adapter/src/Internal/QueryBuilderKeysetItem.php
index 91a57bc..030fea5 100644
--- a/packages/rekapager-doctrine-orm-adapter/src/Internal/QueryBuilderKeysetItem.php
+++ b/packages/rekapager-doctrine-orm-adapter/src/Internal/QueryBuilderKeysetItem.php
@@ -13,6 +13,7 @@
 
 namespace Rekalogika\Rekapager\Doctrine\ORM\Internal;
 
+use Rekalogika\Contracts\Rekapager\Exception\NullBoundaryValueException;
 use Rekalogika\Rekapager\Keyset\Contracts\KeysetItemInterface;
 
 /**
@@ -34,6 +35,12 @@ public function __construct(
         private readonly mixed $value,
         private readonly array $boundaryValues,
     ) {
+        /** @var mixed $v */
+        foreach ($boundaryValues as $k => $v) {
+            if ($v === null) {
+                throw new NullBoundaryValueException(sprintf('The property "%s" of the value "%s" is a boundary value of this pagination, but it is found to be null. Null value in a boundary value is not supported.', $k, get_debug_type($value)));
+            }
+        }
     }
 
     public function getKey(): mixed