diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py
index f2d1a02629d9..5c3c44249345 100644
--- a/Lib/logging/__init__.py
+++ b/Lib/logging/__init__.py
@@ -591,6 +591,7 @@ class Formatter(object):
     %(threadName)s      Thread name (if available)
     %(taskName)s        Task name (if available)
     %(process)d         Process ID (if available)
+    %(processName)s     Process name (if available)
     %(message)s         The result of record.getMessage(), computed just as
                         the record is emitted
     """