diff --git a/docs/gunicorn_ext.py b/docs/gunicorn_ext.py
index b3accc70d..932ac0221 100755
--- a/docs/gunicorn_ext.py
+++ b/docs/gunicorn_ext.py
@@ -51,6 +51,8 @@ def fmt_setting(s):
         val = inspect.getsource(s.default)
         val = "\n".join("    %s" % l for l in val.splitlines())
         val = " ::\n\n" + val
+    elif s.default == '':
+        val = "``(empty string)``"
     else:
         val = "``%s``" % s.default
 
diff --git a/docs/source/2015-news.rst b/docs/source/2015-news.rst
index 971eefa08..61ea225b4 100644
--- a/docs/source/2015-news.rst
+++ b/docs/source/2015-news.rst
@@ -45,7 +45,7 @@ Testing
 
 - fix tornado worker (:issue:`1154`)
 
-  19.4.0 / 2015/11/20
+19.4.0 / 2015/11/20
 ===================
 
 Core
@@ -140,9 +140,6 @@ Misc
 19.3.0 / 2015/03/06
 ===================
 
-Changes
--------
-
 Core
 ++++
 
@@ -167,9 +164,6 @@ Documentation
 19.2.1 / 2015/02/4
 ==================
 
-Changes
--------
-
 Logging
 +++++++
 
@@ -188,9 +182,6 @@ Documentation
 19.2 / 2015/01/30
 =================
 
-Changes
--------
-
 Core
 ++++
 
diff --git a/docs/source/2016-news.rst b/docs/source/2016-news.rst
index 01b4cf9d2..07b48d5c0 100644
--- a/docs/source/2016-news.rst
+++ b/docs/source/2016-news.rst
@@ -14,9 +14,9 @@ Core & Logging
 
 - improvement of the binary upgrade behaviour using USR2: remove file locking (:issue:`1270`)
 - add the ``--capture-output`` setting to capture stdout/stderr tot the log
-file (:issue:`1271`)
+  file (:issue:`1271`)
 - Allow disabling ``sendfile()`` via the ``SENDFILE`` environment variable
-(:issue:`1252`)
+  (:issue:`1252`)
 - fix reload under pycharm (:issue:`1129`)
 
 Workers
@@ -24,7 +24,7 @@ Workers
 
 - fix: make sure to remove the signal from the worker pipe (:issue:`1269`)
 - fix: **gthread** worker, handle removed socket in the select loop
-(:issue:`1258`)
+  (:issue:`1258`)
 
 19.5.0 / 2016/05/10
 ===================
diff --git a/docs/source/settings.rst b/docs/source/settings.rst
index 3aab71635..4aab3dbc4 100644
--- a/docs/source/settings.rst
+++ b/docs/source/settings.rst
@@ -150,6 +150,11 @@ If it is not defined, the default is ``1``.
 
 This setting only affects the Gthread worker type.
 
+.. note::
+   If you try to use the ``sync`` worker type and set the ``threads``
+   setting to more than 1, the ``gthread`` worker type will be used
+   instead.
+
 .. _worker-connections:
 
 worker_connections
@@ -618,8 +623,8 @@ The Access log file to write to.
 
 .. _disable-redirect-access-to-syslog:
 
-disable-redirect-access-to-syslog
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+disable_redirect_access_to_syslog
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 * ``--disable-redirect-access-to-syslog``
 * ``False``
@@ -826,7 +831,7 @@ statsd_prefix
 ~~~~~~~~~~~~~
 
 * ``--statsd-prefix STATSD_PREFIX``
-* ````
+* ``(empty string)``
 
 Prefix to use when emitting statsd metrics (a trailing ``.`` is added,
 if not provided).
@@ -1271,3 +1276,4 @@ The variables are passed to the the PasteDeploy entrypoint. Example::
     $ gunicorn -b 127.0.0.1:8000 --paste development.ini --paste-global FOO=1 --paste-global BAR=2
 
 .. versionadded:: 19.7
+