diff --git a/sys/apps/shell.lua b/sys/apps/shell.lua
index 7036afa..91228fb 100644
--- a/sys/apps/shell.lua
+++ b/sys/apps/shell.lua
@@ -10,6 +10,10 @@ local sandboxEnv = setmetatable({ }, { __index = _G })
 for k,v in pairs(_ENV) do
 	sandboxEnv[k] = v
 end
+sandboxEnv.package = nil
+sandboxEnv.require = nil
+sandboxEnv.arg = nil
+sandboxEnv._ENV = nil
 sandboxEnv.shell = shell
 
 _G.requireInjector(_ENV)
@@ -291,7 +295,9 @@ function shell.setEnv(name, value)
 end
 
 function shell.getEnv()
-	return sandboxEnv
+	local env = Util.shallowCopy(sandboxEnv)
+	_G.requireInjector(env)
+	return env
 end
 
 function shell.setAlias( _sCommand, _sProgram )
diff --git a/sys/kernel.lua b/sys/kernel.lua
index ea4233c..4838892 100644
--- a/sys/kernel.lua
+++ b/sys/kernel.lua
@@ -151,7 +151,7 @@ function kernel.newRoutine(args)
 	}, { __index = Routine })
 
 	Util.merge(routine, args)
-	routine.env = args.env or Util.shallowCopy(shell.getEnv())
+	routine.env = args.env or shell.getEnv()
 
 	return routine
 end