diff --git a/src/scheduler/task.rs b/src/scheduler/task.rs
index d1115547e75f44f8033363a707c2830682c78cd2..96f0a8d0dfb9afbaf20b986bebebf6452fb6187a 100644
--- a/src/scheduler/task.rs
+++ b/src/scheduler/task.rs
@@ -9,7 +9,6 @@ use core::cell::RefCell;
 use core::cmp::Ordering;
 use core::fmt;
 use core::num::NonZeroU64;
-use core::ops::DerefMut;
 
 /// Returns the most significant bit.
 ///