diff --git a/spacy/ja/__init__.py b/spacy/ja/__init__.py
index da2ec8af2..c55f67e47 100644
--- a/spacy/ja/__init__.py
+++ b/spacy/ja/__init__.py
@@ -1,14 +1,10 @@
 # encoding: utf8
 from __future__ import unicode_literals, print_function
 
-from os import path
-
 from ..language import Language
 from ..attrs import LANG
 from ..tokens import Doc
 
-from .language_data import *
-
 
 class Japanese(Language):
     lang = 'ja'
@@ -22,4 +18,5 @@ class Japanese(Language):
         words = [x.surface for x in Tokenizer().tokenize(text)]
         return Doc(self.vocab, words=words, spaces=[False]*len(words))
 
-EXPORT = Japanese
\ No newline at end of file
+
+__all__ = ['Japanese']
diff --git a/spacy/ja/stop_words.py b/spacy/ja/stop_words.py
deleted file mode 100644
index 45bb7a4d8..000000000
--- a/spacy/ja/stop_words.py
+++ /dev/null
@@ -1,9 +0,0 @@
-# encoding: utf8
-from __future__ import unicode_literals
-
-
-# stop words as whitespace-separated list
-STOP_WORDS = set("""
-。
-、
-""".split())
diff --git a/spacy/ja/tag_map.py b/spacy/ja/tag_map.py
deleted file mode 100644
index f5b6b5040..000000000
--- a/spacy/ja/tag_map.py
+++ /dev/null
@@ -1,24 +0,0 @@
-# encoding: utf8
-from __future__ import unicode_literals
-
-from ..symbols import *
-
-
-TAG_MAP = {
-    "ADV":      {POS: ADV},
-    "NOUN":     {POS: NOUN},
-    "ADP":      {POS: ADP},
-    "PRON":     {POS: PRON},
-    "SCONJ":    {POS: SCONJ},
-    "PROPN":    {POS: PROPN},
-    "DET":      {POS: DET},
-    "SYM":      {POS: SYM},
-    "INTJ":     {POS: INTJ},
-    "PUNCT":    {POS: PUNCT},
-    "NUM":      {POS: NUM},
-    "AUX":      {POS: AUX},
-    "X":        {POS: X},
-    "CONJ":     {POS: CONJ},
-    "ADJ":      {POS: ADJ},
-    "VERB":     {POS: VERB}
-}