diff --git a/libao-async-ffi-racket.rkt b/libao-async-ffi-racket.rkt
index a99e480..556959b 100644
--- a/libao-async-ffi-racket.rkt
+++ b/libao-async-ffi-racket.rkt
@@ -1,4 +1,4 @@
-#lang racket/base
+(#lang racket/base
 
 ;; Pure Racket replacement for ao_playasync.c as used by libao.rkt.
 ;;
@@ -160,7 +160,7 @@
   #:mutable
   )
 
-(define ao-buf-ms 100)  ;; Playback buffer of 0.5s
+(define ao-buf-ms 250)  ;; Playback buffer of 0.25s
 
 (define (get h ms-wait)
   (let ((el (if (<= ms-wait 0)