diff --git a/app/models/repository/mercurial.rb b/app/models/repository/mercurial.rb
index 021e60b0d..49fba82cf 100644
--- a/app/models/repository/mercurial.rb
+++ b/app/models/repository/mercurial.rb
@@ -81,16 +81,23 @@ class Repository::Mercurial < Repository
 
   # Returns the latest changesets for +path+; sorted by revision number
   # Default behavior is to search in cached changesets
+  #
+  # Because :order => 'id DESC' is defined at 'has_many',
+  # there is no need to set 'order'.
+  # But, MySQL test fails.
+  # Sqlite3 and PostgreSQL pass.
+  # Is this MySQL bug?
   def latest_changesets(path, rev, limit=10)
     if path.blank?
-      changesets.find(:all, :include => :user, :limit => limit)
+      changesets.find(:all, :include => :user, :limit => limit, :order => 'id DESC')
     else
       changesets.find(:all, :select => "DISTINCT #{Changeset.table_name}.*",
                       :joins => :changes,
                       :conditions => ["#{Change.table_name}.path = ? OR #{Change.table_name}.path LIKE ? ESCAPE ?",
                                       path.with_leading_slash,
                                       "#{path.with_leading_slash.gsub(/[%_\\]/) { |s| "\\#{s}" }}/%", '\\'],
-                      :include => :user, :limit => limit)
+                      :include => :user, :limit => limit, 
+                      :order => "#{Changeset.table_name}.id DESC" )
     end
   end