diff --git a/hw/audio/adlib.c b/hw/audio/adlib.c
index 1270b19..355a259 100644
--- a/hw/audio/adlib.c
+++ b/hw/audio/adlib.c
@@ -23,6 +23,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "qapi/error.h"
 #include "hw/hw.h"
 #include "hw/audio/audio.h"
 #include "audio/audio.h"
diff --git a/hw/audio/gus.c b/hw/audio/gus.c
index b416a54..9dd6947 100644
--- a/hw/audio/gus.c
+++ b/hw/audio/gus.c
@@ -22,6 +22,7 @@
  * THE SOFTWARE.
  */
 #include "qemu/osdep.h"
+#include "qapi/error.h"
 #include "hw/hw.h"
 #include "hw/audio/audio.h"
 #include "audio/audio.h"