diff --git a/src/RutServiceProvider.php b/src/RutServiceProvider.php
index db6c813..30529c9 100644
--- a/src/RutServiceProvider.php
+++ b/src/RutServiceProvider.php
@@ -176,7 +176,5 @@ public function boot(ConfigContract $config): void
         if (class_exists(\Livewire\Livewire::class) && $config->get('rut.synthesizer')) {
             \Livewire\Livewire::propertySynthesizer(Livewire\Synthesizers\RutSynth::class); // @phpstan-ignore-line
         }
-
-        ValidatesRut::$blacklistDummyRuts = $config->get('rut.blacklist_dummy_ruts', false);
     }
 }
diff --git a/src/ValidatesRut.php b/src/ValidatesRut.php
index 8cc72ca..4ec0295 100644
--- a/src/ValidatesRut.php
+++ b/src/ValidatesRut.php
@@ -11,6 +11,7 @@
 use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Str;
 use Illuminate\Validation\Validator;
+use function config;
 
 /**
  * @internal
@@ -24,7 +25,7 @@ class ValidatesRut
      *
      * @const array<int,true>
      */
-    public const DUMMY_RUTS = [
+    public const array DUMMY_RUTS = [
         177777 => true,
         233333 => true,
         466666 => true,
@@ -60,13 +61,6 @@ class ValidatesRut
      */
     protected static array $dummies = self::DUMMY_RUTS;
 
-    /**
-     * Should the validation rules blacklist dummy ruts.
-     *
-     * @var bool
-     */
-    public static bool $blacklistDummyRuts = false;
-
     /**
      * Return a list of Dummy RUTs for development.
      *
@@ -106,7 +100,7 @@ protected static function parseDummies(Enumerable|array $list): array
      */
     protected static function isBlacklisted(Rut $rut): bool
     {
-        return static::$blacklistDummyRuts && isset(static::$dummies[$rut->num]);
+        return config('rut.blacklist_dummy_ruts', false) && isset(static::$dummies[$rut->num]);
     }
 
     /**
diff --git a/tests/Validation/ValidateRuleNumExistsTest.php b/tests/Validation/ValidateRuleNumExistsTest.php
index 3cef016..535bdf4 100644
--- a/tests/Validation/ValidateRuleNumExistsTest.php
+++ b/tests/Validation/ValidateRuleNumExistsTest.php
@@ -143,6 +143,28 @@ public static function providesDummyRut(): array
         return ValidatesRut::dummies()->map(Arr::wrap(...))->toArray();
     }
 
+    #[WithConfig('rut.blacklist_dummy_ruts', false)]
+    #[DataProvider('providesDummyRut')]
+    public function test_validation_rule_num_exists_passes_when_not_blacklisted(Rut $dummyRut): void
+    {
+        User::make()->forceFill([
+            'id' => 4,
+            'name' => 'Jonathan',
+            'email' => 'jonathan.doe@email.com',
+            'password' => '123456',
+            'rut_num' => $dummyRut->num,
+            'rut_vd' => $dummyRut->vd,
+        ])->save();
+
+        $validator = Validator::make([
+            'rut' => $dummyRut->format(),
+        ], [
+            'rut' => Rule::numExists('testing.users', 'rut_num'),
+        ]);
+
+        static::assertFalse($validator->fails());
+    }
+
     #[WithConfig('rut.blacklist_dummy_ruts', true)]
     #[DataProvider('providesDummyRut')]
     public function test_validation_rule_num_exists_fails_if_blacklisted(Rut $dummyRut): void