1 files changed, 6 insertions, 3 deletions
diff --git a/hw/audio/adlib.c b/hw/audio/adlib.c
index 65dff5b6fc..870116e324 100644
--- a/hw/audio/adlib.c
+++ b/hw/audio/adlib.c
@@ -29,6 +29,7 @@
 #include "audio/audio.h"
 #include "hw/isa/isa.h"
 #include "hw/qdev-properties.h"
+#include "qom/object.h"
 
 //#define DEBUG
 
@@ -51,9 +52,11 @@
 #define SHIFT 1
 
 #define TYPE_ADLIB "adlib"
-#define ADLIB(obj) OBJECT_CHECK(AdlibState, (obj), TYPE_ADLIB)
+typedef struct AdlibState AdlibState;
+DECLARE_INSTANCE_CHECKER(AdlibState, ADLIB,
+                         TYPE_ADLIB)
 
-typedef struct {
+struct AdlibState {
     ISADevice parent_obj;
 
     QEMUSoundCard card;
@@ -73,7 +76,7 @@ typedef struct {
     QEMUAudioTimeStamp ats;
     FM_OPL *opl;
     PortioList port_list;
-} AdlibState;
+};
 
 static void adlib_stop_opl_timer (AdlibState *s, size_t n)
 {