diff --git a/tests/FormModelTest.php b/tests/FormModelTest.php
index 5718c42..0dac5b8 100644
--- a/tests/FormModelTest.php
+++ b/tests/FormModelTest.php
@@ -18,6 +18,7 @@
 use Yiisoft\FormModel\Tests\Support\Form\FormWithNestedStructures;
 use Yiisoft\FormModel\Tests\Support\Form\LoginForm;
 use Yiisoft\FormModel\Tests\Support\Form\NestedForm;
+use Yiisoft\FormModel\Tests\Support\Form\NestedRuleForm\MainForm;
 use Yiisoft\FormModel\Tests\Support\StubInputField;
 use Yiisoft\FormModel\Tests\Support\TestHelper;
 use Yiisoft\Test\Support\Container\SimpleContainer;
@@ -414,4 +415,31 @@ public function testFormWithNestedStructures(): void
         $this->assertSame('12.24', $coordinates->getLatitude());
         $this->assertSame('56.78', $coordinates->getLongitude());
     }
+
+    /**
+     * @see https://github.com/yiisoft/form-model/issues/7
+     */
+    public function testNestedRuleWithFormModels(): void
+    {
+        $form = new MainForm();
+
+        TestHelper::createFormHydrator()->populate(
+            $form,
+            [
+                'value' => 'main-form',
+                'firstLevelForm.secondLevelForm.float' => '-7.1',
+            ],
+            scope: ''
+        );
+
+        $result = $form->getValidationResult();
+
+        $this->assertFalse($result->isValid());
+        $this->assertSame(
+            [
+                'firstLevelForm.secondLevelForm.float' => ['Value must be no less than 0.']
+            ],
+            $result->getErrorMessagesIndexedByPath()
+        );
+    }
 }
diff --git a/tests/Support/Form/NestedRuleForm/FirstLevelForm.php b/tests/Support/Form/NestedRuleForm/FirstLevelForm.php
new file mode 100644
index 0000000..8d7260b
--- /dev/null
+++ b/tests/Support/Form/NestedRuleForm/FirstLevelForm.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yiisoft\FormModel\Tests\Support\Form\NestedRuleForm;
+
+use Yiisoft\FormModel\FormModel;
+use Yiisoft\Validator\Rule\Integer;
+use Yiisoft\Validator\Rule\Nested;
+use Yiisoft\Validator\RulesProviderInterface;
+
+final class FirstLevelForm extends FormModel implements RulesProviderInterface
+{
+    private int $number = 1;
+    private SecondLevelForm $secondLevelForm;
+
+    public function __construct()
+    {
+        $this->secondLevelForm = new SecondLevelForm();
+    }
+
+    public function getRules(): array
+    {
+        return [
+            'number' => new Integer(min: 1),
+            'secondLevelForm' => new Nested(),
+        ];
+    }
+}
diff --git a/tests/Support/Form/NestedRuleForm/MainForm.php b/tests/Support/Form/NestedRuleForm/MainForm.php
new file mode 100644
index 0000000..9d5d3c2
--- /dev/null
+++ b/tests/Support/Form/NestedRuleForm/MainForm.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yiisoft\FormModel\Tests\Support\Form\NestedRuleForm;
+
+use Yiisoft\FormModel\FormModel;
+use Yiisoft\Validator\Rule\Nested;
+use Yiisoft\Validator\Rule\Required;
+use Yiisoft\Validator\RulesProviderInterface;
+
+final class MainForm extends FormModel implements RulesProviderInterface
+{
+    public string $value = '';
+    public FirstLevelForm $firstLevelForm;
+
+    public function __construct()
+    {
+        $this->firstLevelForm = new FirstLevelForm();
+    }
+
+    public function getRules(): array
+    {
+        return [
+            'value' => new Required(),
+            'firstLevelForm' => new Nested(),
+        ];
+    }
+}
diff --git a/tests/Support/Form/NestedRuleForm/SecondLevelForm.php b/tests/Support/Form/NestedRuleForm/SecondLevelForm.php
new file mode 100644
index 0000000..972e4af
--- /dev/null
+++ b/tests/Support/Form/NestedRuleForm/SecondLevelForm.php
@@ -0,0 +1,21 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Yiisoft\FormModel\Tests\Support\Form\NestedRuleForm;
+
+use Yiisoft\FormModel\FormModel;
+use Yiisoft\Validator\Rule\Number;
+use Yiisoft\Validator\RulesProviderInterface;
+
+final class SecondLevelForm extends FormModel implements RulesProviderInterface
+{
+    private float $float = 0.01;
+
+    public function getRules(): array
+    {
+        return [
+            'float' => new Number(min: 0),
+        ];
+    }
+}