diff --git a/doc/config-reference/source/block-storage/drivers/ibm-flashsystem-volume-driver.rst b/doc/config-reference/source/block-storage/drivers/ibm-flashsystem-volume-driver.rst
index 4a92b537b9..a2c0968663 100644
--- a/doc/config-reference/source/block-storage/drivers/ibm-flashsystem-volume-driver.rst
+++ b/doc/config-reference/source/block-storage/drivers/ibm-flashsystem-volume-driver.rst
@@ -238,3 +238,5 @@ These operations are supported:
 -  Extend a volume.
 
 -  Get volume statistics.
+
+-  Manage and unmanage a volume.