--- ./src/roff/troff/env.cc.orig	2006-01-12 14:43:05.000000000 +0100
+++ ./src/roff/troff/env.cc	2006-01-12 14:45:55.000000000 +0100
@@ -300,7 +300,7 @@
      * This code is based on jgroff
      * about kerning between ASCII and EUC-JP 
      */
-    if (!ci->get_wchar_code()) {
+    if (!ci->get_wchar_code() || wchar_code(ci->get_wchar_code()) < 0x590) {
       /*
        * This node is a ASCII character node.
        */