diff --git a/src/Collection/Collection.php b/src/Collection/Collection.php
index d243cae4750..ba9e47eff26 100644
--- a/src/Collection/Collection.php
+++ b/src/Collection/Collection.php
@@ -73,25 +73,17 @@ public function unserialize($collection)
     }
 
     /**
-     * Dynamic method handler
+     * Throws an exception.
      *
-     * Collections do not allow access to methods of the inner iterator,
-     * if that iterator is one of the PHP base classes as many of
-     * these methods allow in-place mutation which breaks the immutability
-     * Collection tries to provide.
+     * Collection doesn't permit access to methods of the inner iterator.
      *
      * @param string $name Method name.
      * @param array $args Method arguments.
-     * @return mixed
+     * @return void
      * @throws \BadMethodCallException
      */
     public function __call($name, $args)
     {
-        if (!method_exists(ArrayIterator::class, $name)) {
-            $inner = $this->getInnerIterator();
-
-            return call_user_func_array([$inner, $name], $args);
-        }
         throw new BadMethodCallException(sprintf('Call to undefined method %s::%s()', get_class($this), $name));
     }
 
diff --git a/tests/TestCase/Collection/CollectionTest.php b/tests/TestCase/Collection/CollectionTest.php
index b7868fa5e82..e47629f3c20 100644
--- a/tests/TestCase/Collection/CollectionTest.php
+++ b/tests/TestCase/Collection/CollectionTest.php
@@ -2547,7 +2547,7 @@ public function testArrayIteratorExtend()
         $this->assertTrue(method_exists($iterator, 'checkValues'));
         $this->assertTrue($iterator->checkValues());
 
-        // We need to perform at least two collection operation to trigger the issue.
+        //We need to perform at least two collection operation to trigger the issue.
         $newIterator = $iterator
             ->filter(function ($item) {
                 return $item < 5;
@@ -2556,6 +2556,7 @@ public function testArrayIteratorExtend()
                 return $item > 2;
             });
 
+        $this->assertTrue(method_exists($newIterator, 'checkValues'), 'Our method has gone missing!');
         $this->assertTrue($newIterator->checkValues());
         $this->assertCount(3, $newIterator->toArray());
     }