diff --git a/README.md b/README.md
index 3f6358a..01ed4e5 100644
--- a/README.md
+++ b/README.md
@@ -607,11 +607,11 @@ If this extension is missing, then this library will use a slighty slower Regex
 work-around that should otherwise work equally well.
 Installing `ext-mbstring` is highly recommended.
 
-Internally, it will use the `ext-readline` to enable raw terminal input mode (on
-Linux only as it is known to cause issues on Macs). Otherwise, this library will
-manually set the required TTY settings on start and will try to restore previous
-settings on exit. Input line editing is handled entirely within this library and
-does not rely on `ext-readline`.
+Internally, it will use the `ext-readline` to enable raw terminal input mode.
+If this extension is missing, then this library will manually set the required
+TTY settings on start and will try to restore previous settings on exit.
+Input line editing is handled entirely within this library and does not rely on
+`ext-readline`.
 Installing `ext-readline` is entirely optional.
 
 Note that *Microsoft Windows is not supported*.
diff --git a/src/Stdio.php b/src/Stdio.php
index f2a7e20..84737b2 100644
--- a/src/Stdio.php
+++ b/src/Stdio.php
@@ -21,7 +21,6 @@ class Stdio extends EventEmitter implements DuplexStreamInterface
     private $closed = false;
     private $incompleteLine = '';
     private $originalTtyMode = null;
-    private $usesExtReadlineHandler = false;
 
     public function __construct(LoopInterface $loop, ReadableStreamInterface $input = null, WritableStreamInterface $output = null, Readline $readline = null)
     {
@@ -245,9 +244,8 @@ public function handleCloseOutput()
      */
     private function restoreTtyMode()
     {
-        if ($this->usesExtReadlineHandler) {
+        if (function_exists('readline_callback_handler_remove')) {
             // remove dummy readline handler to turn to default input mode
-            $this->usesExtReadlineHandler = false;
             readline_callback_handler_remove();
         } elseif ($this->originalTtyMode !== null && is_resource(STDIN) && $this->isTty()) {
             // Reset stty so it behaves normally again
@@ -279,14 +277,11 @@ private function createStdin(LoopInterface $loop)
 
         $stream = new ReadableResourceStream(STDIN, $loop);
 
-        if (PHP_OS === 'Linux' && function_exists('readline_callback_handler_install')) {
+        if (function_exists('readline_callback_handler_install')) {
             // Prefer `ext-readline` to install dummy handler to turn on raw input mode.
-            // This is known to work on Linux and known to cause issues with CR/LF
-            // on Mac, so we only use this on Linux for now, see also issue #66.
-            // We will nevery actually feed the readline handler and instead
+            // We will never actually feed the readline handler and instead
             // handle all input in our `Readline` implementation.
             readline_callback_handler_install('', function () { });
-            $this->usesExtReadlineHandler = true;
             return $stream;
         }