diff --git a/bin/region_mover.rb b/bin/region_mover.rb
index 73cc1bbf5f7..3231cabb65d 100644
--- a/bin/region_mover.rb
+++ b/bin/region_mover.rb
@@ -428,7 +428,7 @@ end
 def getFilename(options, targetServer, port)
   filename = options[:file]
   if not filename
-    filename = "/tmp/" + ENV['USER'] + targetServer + ":" + port
+    filename = File.join(Dir.tmpdir(), ENV['USER'] + targetServer + "_" + port.to_s)
   end
   return filename
 end
@@ -441,7 +441,7 @@ optparse = OptionParser.new do |opts|
   opts.separator 'Load or unload regions by moving one at a time'
   options[:file] = nil
   options[:maxthreads] = 1
-  opts.on('-f', '--filename=FILE', 'File to save regions list into unloading, or read from loading; default /tmp/<hostname:port>') do |file|
+  opts.on('-f', '--filename=FILE', 'File to save regions list into unloading, or read from loading; default /USER_TMP_DIR/<hostname:port>') do |file|
     options[:file] = file
   end
   opts.on('-h', '--help', 'Display usage information') do