diff --git a/docs/content/reference/settings.md b/docs/content/reference/settings.md
index 018a0793..52cd3152 100644
--- a/docs/content/reference/settings.md
+++ b/docs/content/reference/settings.md
@@ -285,7 +285,14 @@ Format: https://docs.python.org/3/library/logging.config.html#logging.config.jso
 
 **Command line:** `--log-syslog-to SYSLOG_ADDR`
 
-**Default:** `'unix:///var/run/syslog'`
+**Default:**
+
+Platform-specific:
+
+* macOS: ``'unix:///var/run/syslog'``
+* FreeBSD/DragonFly: ``'unix:///var/run/log'``
+* OpenBSD: ``'unix:///dev/log'``
+* Linux/other: ``'udp://localhost:514'``
 
 Address to send syslog messages.
 
diff --git a/gunicorn/config.py b/gunicorn/config.py
index 2dcf64d0..eb93857b 100644
--- a/gunicorn/config.py
+++ b/gunicorn/config.py
@@ -1568,6 +1568,15 @@ class SyslogTo(Setting):
     else:
         default = "udp://localhost:514"
 
+    default_doc = """\
+    Platform-specific:
+
+    * macOS: ``'unix:///var/run/syslog'``
+    * FreeBSD/DragonFly: ``'unix:///var/run/log'``
+    * OpenBSD: ``'unix:///dev/log'``
+    * Linux/other: ``'udp://localhost:514'``
+    """
+
     desc = """\
     Address to send syslog messages.