diff --git a/libao2/audio_out.h b/libao2/audio_out.h
index 049cfc5f21..e483a88422 100644
--- a/libao2/audio_out.h
+++ b/libao2/audio_out.h
@@ -47,8 +47,7 @@ typedef struct ao_functions_s
 } ao_functions_t;
 
 /* global data used by mplayer and plugins */
-typedef struct ao_data_s
-{
+typedef struct ao_data {
   int samplerate;
   int channels;
   int format;