diff --git a/doc/manpages/qvm-device.rst b/doc/manpages/qvm-device.rst
index 71f661c2..ef6ef3f4 100644
--- a/doc/manpages/qvm-device.rst
+++ b/doc/manpages/qvm-device.rst
@@ -112,6 +112,10 @@ Assign the device with *DEVICE_ID* from *BACKEND_DOMAIN* to the domain *VMNAME*
 
    Assign device persistently which means it will be required to the qube's startup and then automatically attached.
 
+.. option:: --ask, --ask-to-attach
+
+   Assign device but always ask before auto-attachment.
+
 .. option:: --port
 
    Ignore device presented identity and attach any device connected to the given port number.