diff --git a/filters/skkdictools.rb b/filters/skkdictools.rb
index fc5927d..da14914 100755
--- a/filters/skkdictools.rb
+++ b/filters/skkdictools.rb
@@ -68,9 +68,9 @@
   ["う" , "u"],
   ["わ" , "w"], ["を" , "w"],
   ["ぁ" , "x"], ["ぃ" , "x"], ["ぅ" , "x"], ["ぇ" , "x"], ["ぉ" , "x"],
-  ["ゃ" , "x"], ["ゅ" , "x"], ["ょ" , "x"], ["ゎ" , "x"], ["ゐ" , "x"], ["ゑ" , "x"],
+  ["ゃ" , "x"], ["ゅ" , "x"], ["ょ" , "x"], ["ゎ" , "x"], ["ゐ" , "w"], ["ゑ" , "w"],
   ["ゃ" , "y"], ["や" , "y"], ["ゅ" , "y"], ["ゆ" , "y"], ["ょ" , "y"], ["よ" , "y"],
-  ["ざ" , "z"], ["じ" , "z"], ["ず" , "z"], ["ぜ" , "z"], ["ぞ" , "z"]
+  ["ざ" , "z"], ["ず" , "z"], ["ぜ" , "z"], ["ぞ" , "z"]
 ]
 
 # ("あさやけ", "朝焼け") => ("あさやk", "朝焼", "け")