diff --git a/source/about-mongosync.txt b/source/about-mongosync.txt
index c31b71201..12156bf96 100644
--- a/source/about-mongosync.txt
+++ b/source/about-mongosync.txt
@@ -4,8 +4,6 @@
 About ``mongosync``
 ====================
 
-.. default-domain:: mongodb
-
 .. contents:: On this page
    :local:
    :backlinks: none
@@ -163,4 +161,4 @@ Learn More
 To learn more about ``mongosync``, see:
 
 - :ref:`mongosync <c2c-mongosync>`
-- :ref:`mongosync States <c2c-states>`
\ No newline at end of file
+- :ref:`mongosync States <c2c-states>`