diff --git a/rt5.lua b/rt5.lua
index 15759fa..de5dc9a 100755
--- a/rt5.lua
+++ b/rt5.lua
@@ -4,5 +4,4 @@ require "ex"
 local proc
 proc = assert(os.spawn(arg[1]))
 print(proc)
-os.sleep(3)
-proc:wait()
+print(assert(proc:wait()))