diff --git a/docs/source/conf.py b/docs/source/conf.py
index 75e621bc17..672217c84f 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -249,5 +249,6 @@ napoleon_use_ivar = True
 intersphinx_mapping = {
     'python': ('https://docs.python.org/3', None),
     'numpy': ('http://docs.scipy.org/doc/numpy/', None),
-    'pandas': ('http://pandas.pydata.org/pandas-docs/stable/', None)
+    'pandas': ('http://pandas.pydata.org/pandas-docs/stable/', None),
+    'matplotlib': ('http://matplotlib.org/', None)
 }
diff --git a/openmc/universe.py b/openmc/universe.py
index 260b9faf4c..b2e7dbb920 100644
--- a/openmc/universe.py
+++ b/openmc/universe.py
@@ -189,11 +189,9 @@ class Universe(object):
             Hashable object which is used to seed the random number generator
             used to select colors. If None, the generator is seeded from the
             current time.
-
-        Keyword arguments
-        -----------------
-        All keyword arguments are passed to matplotlib.pyplot.imshow.  See the
-        matplotlib documentation for available kwargs.
+        **kwargs
+            All keyword arguments are passed to
+            :func:`matplotlib.pyplot.imshow`.
 
         """
         import matplotlib.pyplot as plt