diff --git a/ChangeLog b/ChangeLog
index 0233eb4e..9a980042 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2009-03-13  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
+
+	Updated doc
+	* src/DefaultBtContext.h
+
 2009-03-13  Tatsuhiro Tsujikawa  <t-tujikawa@users.sourceforge.net>
 
 	Slice/joinPath for name of single torrent.
diff --git a/src/DefaultBtContext.h b/src/DefaultBtContext.h
index 3a1bec86..c3a12c98 100644
--- a/src/DefaultBtContext.h
+++ b/src/DefaultBtContext.h
@@ -120,6 +120,9 @@ private:
   virtual const std::deque<SharedHandle<AnnounceTier> >&
   getAnnounceTiers() const;
 
+  // Note: Before calling load* function, call setDir() to specify
+  // directory.  Setting directory after load* function doesn't change
+  // the output file path.
   virtual void load(const std::string& torrentFile,
 		    const std::string& overrideName = "");