diff --git a/git/cmd.py b/git/cmd.py
index 87e482d82..c0eeec0a5 100644
--- a/git/cmd.py
+++ b/git/cmd.py
@@ -44,6 +44,7 @@
                   'output_stream')
 
 log = logging.getLogger('git.cmd')
+log.addHandler(logging.NullHandler())
 
 __all__ = ('Git', )
 
diff --git a/git/config.py b/git/config.py
index a6a25c7bb..2d9adbdd9 100644
--- a/git/config.py
+++ b/git/config.py
@@ -32,6 +32,7 @@
 
 
 log = logging.getLogger('git.config')
+log.addHandler(logging.NullHandler())
 
 
 class MetaParserBuilder(abc.ABCMeta):
diff --git a/git/objects/commit.py b/git/objects/commit.py
index ac381cd93..d301e3014 100644
--- a/git/objects/commit.py
+++ b/git/objects/commit.py
@@ -34,6 +34,7 @@
 import logging
 
 log = logging.getLogger('git.objects.commit')
+log.addHandler(logging.NullHandler())
 
 __all__ = ('Commit', )
 
diff --git a/git/objects/submodule/base.py b/git/objects/submodule/base.py
index f9b0b6ad6..30201e090 100644
--- a/git/objects/submodule/base.py
+++ b/git/objects/submodule/base.py
@@ -43,6 +43,7 @@
 
 
 log = logging.getLogger('git.objects.submodule.base')
+log.addHandler(logging.NullHandler())
 
 
 class UpdateProgress(RemoteProgress):
diff --git a/git/objects/submodule/root.py b/git/objects/submodule/root.py
index 1c863f6fb..4fe856c2c 100644
--- a/git/objects/submodule/root.py
+++ b/git/objects/submodule/root.py
@@ -13,6 +13,7 @@
 __all__ = ["RootModule", "RootUpdateProgress"]
 
 log = logging.getLogger('git.objects.submodule.root')
+log.addHandler(logging.NullHandler())
 
 
 class RootUpdateProgress(UpdateProgress):