diff --git a/src/libcore/char.rs b/src/libcore/char.rs
index 7f3ac13bac1f..c14ae6e08987 100644
--- a/src/libcore/char.rs
+++ b/src/libcore/char.rs
@@ -327,9 +327,9 @@ pub trait CharExt {
     fn len_utf8(self) -> usize;
     #[stable(feature = "core", since = "1.6.0")]
     fn len_utf16(self) -> usize;
-    #[unstable(feature = "unicode", issue = "27784")]
+    #[stable(feature = "unicode_encode_char", since = "1.15.0")]
     fn encode_utf8(self, dst: &mut [u8]) -> &mut str;
-    #[unstable(feature = "unicode", issue = "27784")]
+    #[stable(feature = "unicode_encode_char", since = "1.15.0")]
     fn encode_utf16(self, dst: &mut [u16]) -> &mut [u16];
 }
 
diff --git a/src/libstd_unicode/char.rs b/src/libstd_unicode/char.rs
index 94599216db6a..b6a502e8c1a5 100644
--- a/src/libstd_unicode/char.rs
+++ b/src/libstd_unicode/char.rs
@@ -448,8 +448,6 @@ impl char {
     /// In both of these examples, 'ß' takes two bytes to encode.
     ///
     /// ```
-    /// #![feature(unicode)]
-    ///
     /// let mut b = [0; 2];
     ///
     /// let result = 'ß'.encode_utf8(&mut b);
@@ -474,9 +472,7 @@ impl char {
     ///
     /// assert!(result.is_err());
     /// ```
-    #[unstable(feature = "unicode",
-               reason = "pending decision about Iterator/Writer/Reader",
-               issue = "27784")]
+    #[stable(feature = "unicode_encode_char", since = "1.15.0")]
     #[inline]
     pub fn encode_utf8(self, dst: &mut [u8]) -> &mut str {
         C::encode_utf8(self, dst)
@@ -495,8 +491,6 @@ impl char {
     /// In both of these examples, '𝕊' takes two `u16`s to encode.
     ///
     /// ```
-    /// #![feature(unicode)]
-    ///
     /// let mut b = [0; 2];
     ///
     /// let result = '𝕊'.encode_utf16(&mut b);
@@ -519,9 +513,7 @@ impl char {
     ///
     /// assert!(result.is_err());
     /// ```
-    #[unstable(feature = "unicode",
-               reason = "pending decision about Iterator/Writer/Reader",
-               issue = "27784")]
+    #[stable(feature = "unicode_encode_char", since = "1.15.0")]
     #[inline]
     pub fn encode_utf16(self, dst: &mut [u16]) -> &mut [u16] {
         C::encode_utf16(self, dst)