diff --git a/Tests/Iterator/LazyIteratorTest.php b/Tests/Iterator/LazyIteratorTest.php
index 1a96c32..db44c1b 100644
--- a/Tests/Iterator/LazyIteratorTest.php
+++ b/Tests/Iterator/LazyIteratorTest.php
@@ -31,7 +31,7 @@ public function testDelegate()
             return new Iterator(['foo', 'bar']);
         });
 
-        $this->assertCount(2, $iterator);
+        $this->assertCount(2, iterator_to_array($iterator));
     }
 
     public function testInnerDestructedAtTheEnd()