diff --git a/fc-lang/ko.orth b/fc-lang/ko.orth
index 39114a5..4bb52c6 100644
--- a/fc-lang/ko.orth
+++ b/fc-lang/ko.orth
@@ -86,7 +86,6 @@
 0x3161  # HANGUL LETTER EU
 0x3162  # HANGUL LETTER YI
 0x3163  # HANGUL LETTER I
-0x3164  # HANGUL FILLER
 0x3165  # HANGUL LETTER SSANGNIEUN
 0x3166  # HANGUL LETTER NIEUN-TIKEUT
 0x3167  # HANGUL LETTER NIEUN-SIOS