diff --git a/src/calibre/gui2/tweak_book/spell.py b/src/calibre/gui2/tweak_book/spell.py
index d62c13b8a9..7bd3a45280 100644
--- a/src/calibre/gui2/tweak_book/spell.py
+++ b/src/calibre/gui2/tweak_book/spell.py
@@ -26,9 +26,10 @@ from calibre.gui2.languages import LanguagesEdit
 from calibre.gui2.progress_indicator import ProgressIndicator
 from calibre.gui2.tweak_book import dictionaries, current_container, set_book_locale, tprefs, editors
 from calibre.gui2.tweak_book.widgets import Dialog
+from calibre.spell import DictionaryLocale
 from calibre.spell.dictionary import (
     builtin_dictionaries, custom_dictionaries, best_locale_for_language,
-    get_dictionary, DictionaryLocale, dprefs, remove_dictionary, rename_dictionary)
+    get_dictionary, dprefs, remove_dictionary, rename_dictionary)
 from calibre.spell.import_from import import_from_oxt
 from calibre.utils.localization import calibre_langcode_to_name, get_language, get_lang, canonicalize_lang
 from calibre.utils.icu import sort_key, primary_sort_key, primary_contains, contains
diff --git a/src/calibre/spell/__init__.py b/src/calibre/spell/__init__.py
index 3adfa10d58..2ca92243f3 100644
--- a/src/calibre/spell/__init__.py
+++ b/src/calibre/spell/__init__.py
@@ -6,5 +6,36 @@ from __future__ import (unicode_literals, division, absolute_import,
 __license__ = 'GPL v3'
 __copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 
+import cPickle
+from collections import namedtuple
+
+from calibre.utils.localization import canonicalize_lang
+
+DictionaryLocale = namedtuple('DictionaryLocale', 'langcode countrycode')
+
+ccodes, ccodemap, country_names = None, None, None
+
+def get_codes():
+    global ccodes, ccodemap, country_names
+    if ccodes is None:
+        data = cPickle.loads(P('localization/iso3166.pickle', allow_user_override=False, data=True))
+        ccodes, ccodemap, country_names = data['codes'], data['three_map'], data['names']
+    return ccodes, ccodemap
+
+def parse_lang_code(raw):
+    raw = raw or ''
+    parts = raw.replace('_', '-').split('-')
+    lc = canonicalize_lang(parts[0])
+    if lc is None:
+        raise ValueError('Invalid language code: %r' % raw)
+    cc = None
+    if len(parts) > 1:
+        ccodes, ccodemap = get_codes()[:2]
+        q = parts[1].upper()
+        if q in ccodes:
+            cc = q
+        else:
+            cc = ccodemap.get(q, None)
+    return DictionaryLocale(lc, cc)
 
 
diff --git a/src/calibre/spell/dictionary.py b/src/calibre/spell/dictionary.py
index c939f6ac65..3b2b55a288 100644
--- a/src/calibre/spell/dictionary.py
+++ b/src/calibre/spell/dictionary.py
@@ -6,16 +6,16 @@ from __future__ import (unicode_literals, division, absolute_import,
 __license__ = 'GPL v3'
 __copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
 
-import cPickle, os, glob, shutil, re
+import os, glob, shutil, re
 from collections import namedtuple
 from operator import attrgetter
 from itertools import chain
 
 from calibre.constants import plugins, config_dir
+from calibre.spell import parse_lang_code
 from calibre.utils.config import JSONConfig
-from calibre.utils.localization import get_lang, canonicalize_lang, get_system_locale
+from calibre.utils.localization import get_lang, get_system_locale
 
-DictionaryLocale = namedtuple('DictionaryLocale', 'langcode countrycode')
 Dictionary = namedtuple('Dictionary', 'primary_locale locales dicpath affpath builtin name id')
 LoadedDictionary = namedtuple('Dictionary', 'primary_locale locales obj builtin name id')
 hunspell = plugins['hunspell'][0]
@@ -40,30 +40,6 @@ class UserDictionary(object):
         return {'name':self.name, 'is_active': self.is_active, 'words':[
             (w, l) for w, l in self.words]}
 
-ccodes, ccodemap, country_names = None, None, None
-def get_codes():
-    global ccodes, ccodemap, country_names
-    if ccodes is None:
-        data = cPickle.loads(P('localization/iso3166.pickle', allow_user_override=False, data=True))
-        ccodes, ccodemap, country_names = data['codes'], data['three_map'], data['names']
-    return ccodes, ccodemap
-
-def parse_lang_code(raw):
-    raw = raw or ''
-    parts = raw.replace('_', '-').split('-')
-    lc = canonicalize_lang(parts[0])
-    if lc is None:
-        raise ValueError('Invalid language code: %r' % raw)
-    cc = None
-    if len(parts) > 1:
-        ccodes, ccodemap = get_codes()[:2]
-        q = parts[1].upper()
-        if q in ccodes:
-            cc = q
-        else:
-            cc = ccodemap.get(q, None)
-    return DictionaryLocale(lc, cc)
-
 _builtins = _custom = None
 
 def builtin_dictionaries():