diff --git a/.github/contributors/himkt.md b/.github/contributors/himkt.md
index d1b60288b..e21aafda5 100644
--- a/.github/contributors/himkt.md
+++ b/.github/contributors/himkt.md
@@ -101,6 +101,6 @@ mark both statements:
 | Name                           | himkt                   |
 | Company name (if applicable)   | University of Tsukuba   |
 | Title or role (if applicable)  |                         |
-| Date                           | 2018-06-08              |
+| Date                           | 2018-06-07              |
 | GitHub username                | himkt                   |
 | Website (optional)             | https://himkt.github.io |
diff --git a/spacy/lang/ja/__init__.py b/spacy/lang/ja/__init__.py
index 1286469de..08b9de758 100644
--- a/spacy/lang/ja/__init__.py
+++ b/spacy/lang/ja/__init__.py
@@ -60,9 +60,8 @@ def detailed_tokens(tokenizer, text):
         parts = node.feature.split(',')
         pos = ','.join(parts[0:4])
 
-        if len(parts) > 6:
+        if len(parts) > 7:
             # this information is only available for words in the tokenizer dictionary
-            reading = parts[6]
             base = parts[7]
 
         words.append( ShortUnitWord(surface, base, pos) )