diff --git a/library/core/src/slice/iter.rs b/library/core/src/slice/iter.rs
index a289b0d6df40..03c503f169c8 100644
--- a/library/core/src/slice/iter.rs
+++ b/library/core/src/slice/iter.rs
@@ -2175,7 +2175,7 @@ unsafe impl<T> Sync for ChunksExactMut<'_, T> where T: Sync {}
 ///
 /// [`array_windows`]: slice::array_windows
 /// [slices]: slice
-#[derive(Debug, Clone, Copy)]
+#[derive(Debug, Clone)]
 #[stable(feature = "array_windows", since = "1.94.0")]
 #[must_use = "iterators are lazy and do nothing unless consumed"]
 pub struct ArrayWindows<'a, T: 'a, const N: usize> {