diff --git a/basis/io/encodings/big5/big5.factor b/basis/io/encodings/big5/big5.factor
index 97943a52ad..749815a22d 100644
--- a/basis/io/encodings/big5/big5.factor
+++ b/basis/io/encodings/big5/big5.factor
@@ -3,7 +3,7 @@
 USING: io.encodings.iana io.encodings.euc ;
 IN: io.encodings.big5
 
-EUC: big5 "vocab:io/encodings/big5/CP950.txt"
+EUC: big5 "vocab:io/encodings/big5/CP950.TXT"
 
 big5 "Big5" register-encoding