diff --git a/docs/jinjaext.py b/docs/jinjaext.py
index 7dc9baf..65f9694 100644
--- a/docs/jinjaext.py
+++ b/docs/jinjaext.py
@@ -146,7 +146,7 @@
                                   'CHANGES'))
     try:
         for line in islice(changelog, 3, None):
-            doc.append(line.rstrip(), '<jinjaext>')
+            doc.append(line.rstrip().decode('utf-8'), '<jinjaext>')
     finally:
         changelog.close()
     return parse_rst(state, content_offset, doc)
diff --git a/jinja2/environment.py b/jinja2/environment.py
index 4a9c9d1..9d43339 100644
--- a/jinja2/environment.py
+++ b/jinja2/environment.py
@@ -53,7 +53,7 @@
 def copy_cache(cache):
     """Create an empty copy of the given cache."""
     if cache is None:
-        return Noe
+        return None
     elif type(cache) is dict:
         return {}
     return LRUCache(cache.capacity)