diff --git a/yomi_base/constants.py b/yomi_base/constants.py
index a98bed1..97b2d2c 100644
--- a/yomi_base/constants.py
+++ b/yomi_base/constants.py
@@ -17,5 +17,5 @@
 
 
 c = {
-    'appVersion': '0.20b',
+    'appVersion': '0.21b',
 }
diff --git a/yomi_base/japanese/dictionary.py b/yomi_base/japanese/dictionary.py
index a7dc00e..e94675a 100644
--- a/yomi_base/japanese/dictionary.py
+++ b/yomi_base/japanese/dictionary.py
@@ -84,8 +84,8 @@ class Dictionary:
         return {
             'id':        kanjiId,
             'character': character,
-            'kunyomi':   kunyomi.split(),
-            'onyomi':    onyomi.split(),
+            'kunyomi':   [] if kunyomi is None else kunyomi.split(),
+            'onyomi':    [] if onyomi is None else onyomi.split(),
             'glossary':  glossary
         }