diff --git a/source/includes/api/requests/start-reversible.sh b/source/includes/api/requests/start-reversible.sh
index 90c25b474..3ae87a77e 100644
--- a/source/includes/api/requests/start-reversible.sh
+++ b/source/includes/api/requests/start-reversible.sh
@@ -4,5 +4,5 @@ curl localhost:27182/api/v1/start -XPOST \
       "source": "cluster0",
       "destination": "cluster1",
       "reversible": true,
-      "enableUserWriteBlocking": true
+      "enableUserWriteBlocking": "sourceAndDestination"
    } '
diff --git a/source/reference/api/start.txt b/source/reference/api/start.txt
index 8fcb4564d..42a70b2c0 100644
--- a/source/reference/api/start.txt
+++ b/source/reference/api/start.txt
@@ -174,7 +174,7 @@ Request Body Parameters
        reversed.
 
        To reverse sync, the ``enableUserWriteBlocking`` field must be set
-       to ``true``.
+       to ``sourceAndDestination``.
 
        This option is not supported for the following configurations:
 
diff --git a/source/reference/cutover-process.txt b/source/reference/cutover-process.txt
index 6c6976410..810ace2e7 100644
--- a/source/reference/cutover-process.txt
+++ b/source/reference/cutover-process.txt
@@ -137,7 +137,7 @@ Steps
       :ref:`manually migrate PQS <c2c-migrate-pqs>` to your destination cluster.
 
       If you previously set ``enableUserWriteBlocking``
-      to ``true``, ``mongosync`` blocks writes on the source cluster
+      to ``sourceAndDestination``, ``mongosync`` blocks writes on the source cluster
       once you complete this step.
 
    .. step:: Wait until you can perform writes on the destination cluster.
diff --git a/source/topologies/multiple-mongosyncs.txt b/source/topologies/multiple-mongosyncs.txt
index 850409ac2..8a6421178 100644
--- a/source/topologies/multiple-mongosyncs.txt
+++ b/source/topologies/multiple-mongosyncs.txt
@@ -163,11 +163,11 @@ Use ``curl`` or another HTTP client to issue the :ref:`start
 
    curl mongosync01Host:27601/api/v1/start -XPOST --data \
         '{ "source": "cluster0", "destination": "cluster1", \
-           "reversible": false, "enableUserWriteBlocking": false }'
+           "reversible": false, "enableUserWriteBlocking": "none" }'
 
    curl mongosync02Host:27602/api/v1/start -XPOST --data \
         '{ "source": "cluster0", "destination": "cluster1", \
-           "reversible": false, "enableUserWriteBlocking": false }'
+           "reversible": false, "enableUserWriteBlocking": "none" }'
 
 The ``start`` command options must be the same for all of the ``mongosync``
 instances.