diff --git a/xorriso/xorriso.1 b/xorriso/xorriso.1
index 392b9b01..443ae0c7 100644
--- a/xorriso/xorriso.1
+++ b/xorriso/xorriso.1
@@ -473,7 +473,8 @@ predicted_nwa is the block address where the add-on session of blind
 growing will finally end up. It is the responsibility of the user to ensure
 this final position and the presence of the older sessions. Else the
 overall ISO image will not be mountable or will produce read errors when
-accessing file content.
+accessing file content. xorriso will write the session to the address
+as obtained from examining -outdev and not necessarily to predicted_nwa.
 .br
 During a run of blind growing, the input drive gets released before output
 begins. The output drive gets released when writing is done.