diff --git a/lib/ansible/modules/extras/system/lvol.py b/lib/ansible/modules/extras/system/lvol.py
index 61c76abd287..cbc7d47e3a9 100644
--- a/lib/ansible/modules/extras/system/lvol.py
+++ b/lib/ansible/modules/extras/system/lvol.py
@@ -48,7 +48,8 @@ options:
     choices: [ "present", "absent" ]
     default: present
     description:
-    - Control if the logical volume exists.
+    - Control if the logical volume exists. If C(present) the C(size) option 
+      is required.
     required: false
   force:
     version_added: "1.5"