diff --git a/src/docbkx/book.xml b/src/docbkx/book.xml
index 8d3d2e50a07..3a7e6418089 100644
--- a/src/docbkx/book.xml
+++ b/src/docbkx/book.xml
@@ -1909,6 +1909,7 @@ scan.setFilter(filter);
helpful description, HBase I/O: HFile.
For more information, see the HFile source code.
+ Also see for information about the HFile v2 format that was included in 0.92.