diff --git a/flake8/_pyflakes.py b/flake8/_pyflakes.py
index daf2749..fabcfbd 100644
--- a/flake8/_pyflakes.py
+++ b/flake8/_pyflakes.py
@@ -1,4 +1,10 @@
 # -*- coding: utf-8 -*-
+try:
+    # The 'demandimport' breaks pyflakes and flake8._pyflakes
+    from mercurial import demandimport
+    demandimport.disable()
+except ImportError:
+    pass
 import pyflakes
 import pyflakes.checker
 
diff --git a/flake8/hooks.py b/flake8/hooks.py
index 5173883..a84c312 100644
--- a/flake8/hooks.py
+++ b/flake8/hooks.py
@@ -6,12 +6,6 @@ import stat
 from subprocess import Popen, PIPE
 import shutil
 from tempfile import mkdtemp
-try:
-    # The 'demandimport' breaks pyflakes and flake8._pyflakes
-    from mercurial import demandimport
-    demandimport.disable()
-except ImportError:
-    pass
 try:
     from configparser import ConfigParser
 except ImportError:   # Python 2