diff --git a/src/collections/scoped_buffer.rs b/src/collections/scoped_buffer.rs
index 0c98be33aa21af26c96f69b8b0bb9ce22025ac68..7f519743775cad7b393f2e328eab987b96fb8fdf 100644
--- a/src/collections/scoped_buffer.rs
+++ b/src/collections/scoped_buffer.rs
@@ -116,7 +116,7 @@ impl<T: Sized> std::ops::Index<usize> for ScopedSection<T> {
 #[cfg(debug_assertions)]
 impl<T: Sized> Drop for ScopedSection<T> {
     fn drop(&mut self) {
-        let mut vec = unsafe{&mut *self.inner};
+        let vec = unsafe{&mut *self.inner};
         debug_assert_eq!(vec.len(), self.cur_size as usize);
         vec.truncate(self.start_size as usize);
     }