diff --git a/doc/training-guides/bk002-operator-training-guide.xml b/doc/training-guides/bk002-operator-training-guide.xml
index 6dfc756cea..332297ad74 100644
--- a/doc/training-guides/bk002-operator-training-guide.xml
+++ b/doc/training-guides/bk002-operator-training-guide.xml
@@ -17,5 +17,5 @@
     <xi:include href="./bk002-ch009-operator-compute-node-quiz.xml"/>
     <xi:include href="./bk002-ch013-operator-object-storage-node.xml"/>
     <xi:include href="./bk002-ch014-operator-object-storage-node-lab.xml"/>
-    <xi:include href="./bk002-ch015-operator-object-storage-node-quiz.xml"/>
+    <!-- xi:include href="./bk002-ch015-operator-object-storage-node-quiz.xml"/ -->
 </book>