diff --git a/hw/ide/microdrive.c b/hw/ide/microdrive.c
index aeb77a0..49a9b93 100644
--- a/hw/ide/microdrive.c
+++ b/hw/ide/microdrive.c
@@ -51,7 +51,7 @@ typedef struct {

     uint8_t ctrl;
     uint16_t io;
-    int cycle;
+    uint8_t cycle;
 } MicroDriveState;

 /* Register bitfields */