diff --git a/doc/conf.py b/doc/conf.py
index 34464d94..3082f8c3 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -15,6 +15,31 @@ import sys, os, exceptions
 
 #Mocking uninstalled modules: https://read-the-docs.readthedocs.org/en/latest/faq.html
 
+##############################################################################
+##
+## Mock out imports with C dependencies because ReadTheDocs can't build them.
+class Mock(object):
+    def __init__(self, *args, **kwargs):
+        pass
+
+    def __call__(self, *args, **kwargs):
+        return Mock()
+
+    @classmethod
+    def __getattr__(cls, name):
+        if name in ('__file__', '__path__'):
+            return '/dev/null'
+        elif name[0] == name[0].upper():
+            mockType = type(name, (), {})
+            mockType.__module__ = __name__
+            return mockType
+        else:
+            return Mock()
+
+MOCK_MODULES = ['matplotlib', 'matplotlib.pyplot', 'pylab' ]
+for mod_name in MOCK_MODULES:
+    sys.modules[mod_name] = Mock()
+
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
@@ -323,29 +348,3 @@ epub_copyright = u'2013, Author'
     #app.connect("autodoc-skip-member", skip)
 
 
-##############################################################################
-##
-## Mock out imports with C dependencies because ReadTheDocs can't build them.
-class Mock(object):
-    def __init__(self, *args, **kwargs):
-        pass
-
-    def __call__(self, *args, **kwargs):
-        return Mock()
-
-    @classmethod
-    def __getattr__(cls, name):
-        if name in ('__file__', '__path__'):
-            return '/dev/null'
-        elif name[0] == name[0].upper():
-            mockType = type(name, (), {})
-            mockType.__module__ = __name__
-            return mockType
-        else:
-            return Mock()
-
-MOCK_MODULES = ['matplotlib', 'matplotlib.pyplot', 
-                'pylab'
-                ]
-for mod_name in MOCK_MODULES:
-    sys.modules[mod_name] = Mock()