diff --git a/docs/Performance and Tuning/Module Parameters.rst b/docs/Performance and Tuning/Module Parameters.rst
index f9d85c483..38a1f3c30 100644
--- a/docs/Performance and Tuning/Module Parameters.rst	
+++ b/docs/Performance and Tuning/Module Parameters.rst	
@@ -4751,14 +4751,15 @@ synced so the previous data can be found.
 +==========================+==========================================+
 | Tags                     | `DMU <#dmu>`__                           |
 +--------------------------+------------------------------------------+
-| When to change           | TBD                                      |
+| When to change           | to exchange strict hole reporting for    |
+|                          | performance                              |
 +--------------------------+------------------------------------------+
 | Data Type                | boolean                                  |
 +--------------------------+------------------------------------------+
 | Range                    | 0=do not force txg sync to find holes,   |
 |                          | 1=force txg sync to find holes           |
 +--------------------------+------------------------------------------+
-| Default                  | 0                                        |
+| Default                  | 1 since v2.1.5, previously 0             |
 +--------------------------+------------------------------------------+
 | Change                   | Dynamic                                  |
 +--------------------------+------------------------------------------+