diff --git a/ChangeLog b/ChangeLog
index 269119406b..c1988f3dd9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Dec  2 19:06:06 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
+
+	* dir.c (Compare): should not fold double byte alphabet on win9x.
+
 Thu Dec  1 00:50:33 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* eval.c (rb_funcall2): allow to call protected methods.
diff --git a/dir.c b/dir.c
index 8e0b49fc43..4ae4f5dafa 100644
--- a/dir.c
+++ b/dir.c
@@ -121,7 +121,7 @@ CompareImpl(const char *p1, const char *p2, int nocase)
     if (len2 == 0) return -len1;
 
 #ifdef _WIN32
-    if (nocase) {
+    if (nocase && rb_w32_iswinnt()) {
 	if (len1 > 1) {
 	    if (len1 >= sizeof(buf1)) {
 		rb_fatal("CompareImpl: too large len");