diff --git a/src/bot_worker.rs b/src/bot_worker.rs
index efdad78..6857558 100644
--- a/src/bot_worker.rs
+++ b/src/bot_worker.rs
@@ -33,7 +33,7 @@ pub fn new<'a>(scope:&'a std::thread::Scope<'a,'_>)->crate::worker::QNWorker<'a,
 				}
 			}
 			Instruction::Push{ins}=>{
-				match &worker.file{
+				match &mut worker.file{
 					Some(file)=>file.push(ins).unwrap(),
 					None=>println!("no file created!"),
 				}