diff --git a/library/alloc/src/rc.rs b/library/alloc/src/rc.rs
index 0f7c448996da0..8fdba17cc1f80 100644
--- a/library/alloc/src/rc.rs
+++ b/library/alloc/src/rc.rs
@@ -2239,7 +2239,7 @@ impl Default for Rc<str> {
 #[cfg(not(no_global_oom_handling))]
 #[stable(feature = "more_rc_default_impls", since = "CURRENT_RUSTC_VERSION")]
 impl<T> Default for Rc<[T]> {
-    /// Creates an empty [T] inside an Rc
+    /// Creates an empty `[T]` inside an Rc
     #[inline]
     fn default() -> Self {
         let arr: [T; 0] = [];
diff --git a/library/alloc/src/sync.rs b/library/alloc/src/sync.rs
index a03ad909113a7..969d2056798e3 100644
--- a/library/alloc/src/sync.rs
+++ b/library/alloc/src/sync.rs
@@ -3311,7 +3311,7 @@ impl Default for Arc<str> {
 #[cfg(not(no_global_oom_handling))]
 #[stable(feature = "more_rc_default_impls", since = "CURRENT_RUSTC_VERSION")]
 impl<T> Default for Arc<[T]> {
-    /// Creates an empty [T] inside an Arc
+    /// Creates an empty `[T]` inside an Arc
     #[inline]
     fn default() -> Self {
         let arr: [T; 0] = [];