diff --git a/src/include/86box/snd_ad1848.h b/src/include/86box/snd_ad1848.h
index 6bdd2bf40..319f9bf24 100644
--- a/src/include/86box/snd_ad1848.h
+++ b/src/include/86box/snd_ad1848.h
@@ -61,6 +61,9 @@ typedef struct ad1848_t {
     int     adpcm_data;
     int     adpcm_pos;
 
+    uint8_t  dma_ff;
+    uint32_t dma_data;
+
     pc_timer_t timer_count;
     uint64_t   timer_latch;