diff --git a/lib/readline-sync.js b/lib/readline-sync.js
index 67e8110..7fd10c0 100644
--- a/lib/readline-sync.js
+++ b/lib/readline-sync.js
@@ -31,7 +31,7 @@ var _readlineSync = function(display) {
       if (e.code === 'EOF') { break; } // pipe
       if (e.code === 'EAGAIN') { // EAGAIN, resource temporarily unavailable
         // util can't inherit Error.
-        err = new Error('The platform don\'t support interactively reading from stdin');
+        err = new Error('The platform doesn\'t support interactively reading from stdin');
         err.errno = e.errno;
         err.code = e.code;
       }