diff --git a/lib/msf/core/post/linux/system.rb b/lib/msf/core/post/linux/system.rb
index cf0f5ba984..33ff68109b 100644
--- a/lib/msf/core/post/linux/system.rb
+++ b/lib/msf/core/post/linux/system.rb
@@ -1,5 +1,6 @@
 require 'msf/core/post/common'
 require 'msf/core/post/file'
+require 'msf/core/post/unix'
 
 module Msf
 class Post