diff --git a/CHANGES b/CHANGES
index 8813e6f29..0a0606a5a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -266,6 +266,7 @@ Bugs fixed
   results in warning / error
 * #3068: Allow the '=' character in the -D option of sphinx-build.py
 * #3074: ``add_source_parser()`` crashes in debug mode
+* #3135: ``sphinx.ext.autodoc`` crashes with plain Callable
 
 Release 1.4.8 (released Oct 1, 2016)
 ====================================
diff --git a/EXAMPLES b/EXAMPLES
index e5d27f747..e84e0db26 100644
--- a/EXAMPLES
+++ b/EXAMPLES
@@ -94,6 +94,7 @@ Documentation using a customized version of the classic theme
 * NumPy: http://docs.scipy.org/doc/numpy/reference/
 * OpenCV: http://docs.opencv.org/
 * Peach^3: http://peach3.nl/doc/latest/userdoc/
+* Pygame: http://www.pygame.org/docs/
 * Sage: http://www.sagemath.org/doc/
 * SciPy: http://docs.scipy.org/doc/scipy/reference/
 * simuPOP: http://simupop.sourceforge.net/manual_release/build/userGuide.html
diff --git a/doc/_themes/sphinx13/static/sphinx13.css b/doc/_themes/sphinx13/static/sphinx13.css
index a2549e181..26df65b45 100644
--- a/doc/_themes/sphinx13/static/sphinx13.css
+++ b/doc/_themes/sphinx13/static/sphinx13.css
@@ -384,6 +384,10 @@ div.warning ul, div.warning ol {
     padding: 0;
 }
 
+div.admonition div.highlight {
+    background: none;
+}
+
 .viewcode-back {
     font-family: 'Open Sans', 'Lucida Grande', 'Lucida Sans Unicode', 'Geneva',
                  'Verdana', sans-serif;
diff --git a/sphinx/ext/autodoc.py b/sphinx/ext/autodoc.py
index 9b8bc7e5f..20f4cee0b 100644
--- a/sphinx/ext/autodoc.py
+++ b/sphinx/ext/autodoc.py
@@ -317,7 +317,9 @@ def format_annotation(annotation):
                 hasattr(annotation, '__result__'):
             # Skipped in the case of plain typing.Callable
             args = annotation.__args__
-            if args is Ellipsis:
+            if args is None:
+                return qualified_name
+            elif args is Ellipsis:
                 args_str = '...'
             else:
                 formatted_args = (format_annotation(a) for a in args)
diff --git a/sphinx/locale/it/LC_MESSAGES/sphinx.po b/sphinx/locale/it/LC_MESSAGES/sphinx.po
index b37c4410d..51b0f6e56 100644
--- a/sphinx/locale/it/LC_MESSAGES/sphinx.po
+++ b/sphinx/locale/it/LC_MESSAGES/sphinx.po
@@ -819,7 +819,7 @@ msgstr "Ricerca completata, trovata/e %s pagina/e corrispondenti."
 
 #: sphinx/themes/basic/static/searchtools.js_t:338
 msgid ", in "
-msgstr ", in"
+msgstr ", in "
 
 #: sphinx/themes/classic/static/sidebar.js_t:83
 msgid "Expand sidebar"
diff --git a/tox.ini b/tox.ini
index 09c3e751d..ca3cac99b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -10,6 +10,7 @@ deps=
     whoosh
     html5lib
     mock
+    typing
 setenv =
     SPHINX_TEST_TEMPDIR = {envdir}/testbuild
 commands=