diff --git a/README.md b/README.md
index edf3bc4..b0b5d88 100644
--- a/README.md
+++ b/README.md
@@ -122,3 +122,19 @@ $app->add(function (Request $request, Response $res, $next) {
     }
 });
 ```
+
+
+## White listing
+You may add a URI path for white listing. The whitelisting is based upon `strpos()` so you may use a URI fragment to whitelist a whole class of URIs.
+With this it is possible to whitelist URIs by accident.
+
+Example:
+```php
+
+$acl = new Acl();
+$acl->addWhitelistItem('/api');
+```
+
+In this example any URI with `/api` will be whitelisted. 
+- `/api/*`
+- `/myexample/api/*`
diff --git a/tests/AclRepositoryTest.php b/tests/AclRepositoryTest.php
index 09ae25a..dbee13b 100644
--- a/tests/AclRepositoryTest.php
+++ b/tests/AclRepositoryTest.php
@@ -180,5 +180,15 @@ public function testAclRepoUser2_yes() {
         $this->assertEquals(200, $output->getStatusCode());
     }
 
+    public function testAclRepoGuest_Whitelist() {
+        $reqRoot = $this->mockRequest('/yes');
+        $res = $this->mockResponse(401);
+
+        $acl = $this->user2;
+        $acl->addWhiteListUri('/yes');
+        $output = $acl($reqRoot, $res, $this->getClosure());
+
+        $this->assertEquals(200, $output->getStatusCode());
+    }
 
 }