diff --git a/ChangeLog b/ChangeLog
index e7186b1958..3c2d7e132b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat Nov 26 19:57:45 2005  WATANABE Hirofumi  <eban@ruby-lang.org>
+
+	* dln.c (conv_to_posix_path): should initialize posix.
+
 Fri Nov 25 14:34:09 2005  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* range.c (range_max): treat end exclusion without iteration if
diff --git a/dln.c b/dln.c
index 33b1f6bd41..8846860134 100644
--- a/dln.c
+++ b/dln.c
@@ -1645,6 +1645,7 @@ conv_to_posix_path(win32, posix, len)
     char *p = win32;
     char *dst = posix;
 
+    posix[0] = '\0';
     for (p = win32; *p; p++)
 	if (*p == ';') {
 	    *p = 0;