diff --git a/src/rvoice/fluid_rvoice_mixer.c b/src/rvoice/fluid_rvoice_mixer.c
index fc717306..062f6acf 100644
--- a/src/rvoice/fluid_rvoice_mixer.c
+++ b/src/rvoice/fluid_rvoice_mixer.c
@@ -41,13 +41,12 @@ struct _fluid_mixer_buffers_t
     fluid_rvoice_mixer_t *mixer; /**< Owner of object */
 #if ENABLE_MIXER_THREADS
     fluid_thread_t *thread;     /**< Thread object */
+    fluid_atomic_int_t ready;   /**< Atomic: buffers are ready for mixing */
 #endif
 
     fluid_rvoice_t **finished_voices; /* List of voices who have finished */
     int finished_voice_count;
 
-    fluid_atomic_int_t ready;             /**< Atomic: buffers are ready for mixing */
-
     fluid_real_t *local_buf;
 
     int buf_count;