diff --git a/Permissions/PermissionManager.php b/Permissions/PermissionManager.php
index 130e815..efbd952 100644
--- a/Permissions/PermissionManager.php
+++ b/Permissions/PermissionManager.php
@@ -63,6 +63,26 @@ protected function getState($checkedPermission)
             return false;
         }
 
-        return (bool) $checkedPermission;
+        return (bool)$checkedPermission;
+    }
+
+    /**
+     * Are all of the permissions passed of false value?
+     * @param array $permissions    Permissions array
+     * @return bool
+     */
+    public function permissionsAreAllFalse(array $permissions)
+    {
+        $uniquePermissions = array_unique($permissions);
+
+        if (count($uniquePermissions) > 1) {
+            return false;
+        }
+
+        $uniquePermission = reset($uniquePermissions);
+
+        $cleanedPermission = $this->getState($uniquePermission);
+
+        return $cleanedPermission === false;
     }
 }
diff --git a/Tests/Permissions/PermissionManagerTest.php b/Tests/Permissions/PermissionManagerTest.php
new file mode 100644
index 0000000..91e2a0e
--- /dev/null
+++ b/Tests/Permissions/PermissionManagerTest.php
@@ -0,0 +1,72 @@
+<?php
+
+namespace Modules\Core\Tests\Permissions;
+
+use Mockery;
+use Modules\Core\Permissions\PermissionManager;
+use Modules\Core\Tests\BaseTestCase;
+use Pingpong\Modules\Repository;
+
+class PermissionManagerTest extends BaseTestCase
+{
+    /**
+     * @test
+     */
+    public function it_should_know_if_permissions_are_all_false()
+    {
+        $modules = $this->getModulesRepositoryMock();
+        $this->app->instance('modules', $modules);
+
+        $manager = new PermissionManager();
+
+        $allFalsePermissions = $manager->permissionsAreAllFalse([
+            'permission1' => 'false',
+            'permission2' => 'false',
+            'permission3' => 'false',
+            'permission4' => 'false',
+        ]);
+
+        $mixedPermissioms = $manager->permissionsAreAllFalse([
+            'permission1' => 'true',
+            'permission2' => 'false',
+            'permission3' => 'false',
+            'permission4' => 'true',
+        ]);
+
+        $this->assertSame(true, $allFalsePermissions);
+        $this->assertSame(false, $mixedPermissioms);
+    }
+
+    /**
+     * @test
+     */
+    public function it_should_clean_permissions()
+    {
+        $input = [
+            'permission1' => 'true',
+            'permission2' => 'true',
+            'permission3' => 'false',
+            'permission4' => 'false',
+            'permission5' => 'true'
+        ];
+
+        $expected = [
+            'permission1' => true,
+            'permission2' => true,
+            'permission3' => false,
+            'permission4' => false,
+            'permission5' => true
+        ];
+
+        $manager = new PermissionManager();
+
+        $actual = $manager->clean($input);
+
+        $this->assertSame($expected, $actual, "The PermissionManager should clean the permissions and fix their states.");
+    }
+
+    protected function getModulesRepositoryMock()
+    {
+        return Mockery::mock(Repository::class);
+    }
+}
diff --git a/composer.json b/composer.json
index 108cf31..a53c8c3 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,8 @@
     "dimsav/laravel-translatable": "~5.0",
     "mcamara/laravel-localization": "~1.0",
     "floatingpoint/stylist": "~0.1",
-    "maatwebsite/laravel-sidebar": "~2.0"
+    "maatwebsite/laravel-sidebar": "~2.0",
+    "mockery/mockery": "^0.9.4"
   },
   "require-dev": {
     "phpunit/phpunit": "~4.0",