diff --git a/parts/player/player.lua b/parts/player/player.lua
index f558e95f..3da7ed95 100644
--- a/parts/player/player.lua
+++ b/parts/player/player.lua
@@ -203,7 +203,7 @@ end
 --------------------------<Method>--------------------------
 function Player:newTask(code,...)
     local thread=coroutine.create(code)
-    resume(thread,self,...)
+    assert(resume(thread,self,...))
     if status(thread)~='dead'then
         ins(self.tasks,{
             thread=thread,