diff --git a/docs/source/usersguide/input.rst b/docs/source/usersguide/input.rst
index a20ceda187..ce1d07ca00 100644
--- a/docs/source/usersguide/input.rst
+++ b/docs/source/usersguide/input.rst
@@ -1141,7 +1141,7 @@ Each ``material`` element can have the following attributes or sub-elements:
     ACE files (default). Alternatively, when set to "iso-in-lab", the ACE
     scattering laws are used to sample the outgoing energy but an
     isotropic-in-lab  distribution is used to sample the outgoing angle at each
-    scattering  interaction. The ``scattering`` attribute may be most useful
+    scattering interaction. The ``scattering`` attribute may be most useful
     when using OpenMC to compute multi-group cross-sections for deterministic
     transport codes and to quantify the effects of anisotropic scattering.
 
@@ -1171,6 +1171,16 @@ Each ``material`` element can have the following attributes or sub-elements:
 
     *Default*: None
 
+    An optional attribute/sub-element for each element is ``scattering``. This
+    attribute may be set to "ace" to use the scattering laws specified in the
+    ACE files (default). Alternatively, when set to "iso-in-lab", the ACE
+    scattering laws are used to sample the outgoing energy but an
+    isotropic-in-lab  distribution is used to sample the outgoing angle at each
+    scattering interaction. The ``scattering`` attribute may be most useful
+    when using OpenMC to compute multi-group cross-sections for deterministic
+    transport codes and to quantify the effects of anisotropic scattering.
+
+    *Default*: None
 
   :sab:
     Associates an S(a,b) table with the material. This element has