diff --git a/scim-wnn/data/like-msime.rkt b/scim-wnn/data/like-msime.rkt
index 6fd5674..854e2ca 100644
--- a/scim-wnn/data/like-msime.rkt
+++ b/scim-wnn/data/like-msime.rkt
@@ -2,6 +2,7 @@
 $nnMode true
 $Key/Ascii      null
 $Key/WideAscii  null
+-       ー
 a       あ
 i       い
 yi      い