diff --git a/src/liballoc/arc.rs b/src/liballoc/arc.rs
index 38d843263ff..b904d818feb 100644
--- a/src/liballoc/arc.rs
+++ b/src/liballoc/arc.rs
@@ -461,17 +461,13 @@ impl<T: ?Sized> Arc<T> {
     }
 
     #[inline]
-    #[unstable(feature = "ptr_eq",
-               reason = "newly added",
-               issue = "36497")]
+    #[stable(feature = "ptr_eq", since = "1.17.0")]
     /// Returns true if the two `Arc`s point to the same value (not
     /// just values that compare as equal).
     ///
     /// # Examples
     ///
     /// ```
-    /// #![feature(ptr_eq)]
-    ///
     /// use std::sync::Arc;
     ///
     /// let five = Arc::new(5);
diff --git a/src/liballoc/rc.rs b/src/liballoc/rc.rs
index eb449b26606..a5d1381260b 100644
--- a/src/liballoc/rc.rs
+++ b/src/liballoc/rc.rs
@@ -551,17 +551,13 @@ impl<T: ?Sized> Rc<T> {
     }
 
     #[inline]
-    #[unstable(feature = "ptr_eq",
-               reason = "newly added",
-               issue = "36497")]
+    #[stable(feature = "ptr_eq", since = "1.17.0")]
     /// Returns true if the two `Rc`s point to the same value (not
     /// just values that compare as equal).
     ///
     /// # Examples
     ///
     /// ```
-    /// #![feature(ptr_eq)]
-    ///
     /// use std::rc::Rc;
     ///
     /// let five = Rc::new(5);