diff --git a/sys/apis/process.lua b/sys/apis/process.lua
index b851585..8bb60e9 100644
--- a/sys/apis/process.lua
+++ b/sys/apis/process.lua
@@ -1,3 +1,5 @@
+local Util = require('util')
+
 local Process = { }
 
 function Process:init(args)