diff --git a/docs/source/usersguide/input.rst b/docs/source/usersguide/input.rst
index 83eb2a3d8..eebe6bfc1 100644
--- a/docs/source/usersguide/input.rst
+++ b/docs/source/usersguide/input.rst
@@ -414,6 +414,8 @@ attributes/sub-elements:
     source bank will be available. It should be noted that a user can set both 
     this element to "true" and specify batches to write a permanent source bank.
 
+    *Default*: false
+
 ``<survival_biasing>`` Element
 ------------------------------