diff --git a/CHANGES.rst b/CHANGES.rst
index a509b87..591d870 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -6,7 +6,7 @@ CHANGES
 
 - New option ``doctests`` to run Pyflakes checks on doctests too
 - New option ``jobs`` to launch multiple jobs in parallel
-- Fix Git and Mercurial hooks, issues #88 and #133
+- Fix Git and Mercurial hooks, issues #88, #133 and #148
 - Fix crashes with Python 3.4 by upgrading dependencies
 - Fix traceback when running tests with Python 2.6
 - Fix the setuptools command ``python setup.py flake8`` to read
diff --git a/flake8/hooks.py b/flake8/hooks.py
index 48f50b3..f53c8f0 100644
--- a/flake8/hooks.py
+++ b/flake8/hooks.py
@@ -125,10 +125,10 @@ def run(command, raw_output=False, decode=True):
     # endswith method. That should work but might still fail horribly.
     if hasattr(stdout, 'decode'):
         if decode:
-            stdout = stdout.decode()
+            stdout = stdout.decode('utf-8')
     if hasattr(stderr, 'decode'):
         if decode:
-            stderr = stderr.decode()
+            stderr = stderr.decode('utf-8')
     if not raw_output:
         stdout = [line.strip() for line in stdout.splitlines()]
         stderr = [line.strip() for line in stderr.splitlines()]