Doc/library/logging.rst | 2 +-
 Lib/logging/__init__.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Doc/library/logging.rst b/Doc/library/logging.rst
index 68e4592..c9f033a 100644
--- a/Doc/library/logging.rst
+++ b/Doc/library/logging.rst
@@ -1023,7 +1023,7 @@ functions.
       handlers being added multiple times to the root logger, which can in turn
       lead to multiple messages for the same event.
 
-.. function:: disable(lvl)
+.. function:: disable(lvl=CRITICAL)
 
    Provides an overriding level *lvl* for all loggers which takes precedence over
    the logger's own level. When the need arises to temporarily throttle logging
diff --git a/Lib/logging/__init__.py b/Lib/logging/__init__.py
index 2590d65..d886d35 100644
--- a/Lib/logging/__init__.py
+++ b/Lib/logging/__init__.py
@@ -1889,7 +1889,7 @@ def log(level, msg, *args, **kwargs):
         basicConfig()
     root.log(level, msg, *args, **kwargs)
 
-def disable(level):
+def disable(level=CRITICAL):
     """
     Disable all logging calls of severity 'level' and below.
     """