diff --git a/src/kernel/synch.rs b/src/kernel/synch.rs
index 15996ac..5d56023 100644
--- a/src/kernel/synch.rs
+++ b/src/kernel/synch.rs
@@ -1,4 +1,3 @@
-use core::panicking::panic;
 use crate::utility::list::List;
 use crate::kernel::thread::Thread;
 use crate::simulator::interrupt::InterruptStatus::InterruptOff;