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-rw-r--r--hw/misc/tz-mpc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/misc/tz-mpc.c b/hw/misc/tz-mpc.c
index fb48a1540b..9a84be75ed 100644
--- a/hw/misc/tz-mpc.c
+++ b/hw/misc/tz-mpc.c
@@ -150,7 +150,7 @@ static MemTxResult tz_mpc_reg_read(void *opaque, hwaddr addr,
         r = s->ctrl;
         break;
     case A_BLK_MAX:
-        r = s->blk_max;
+        r = s->blk_max - 1;
         break;
     case A_BLK_CFG:
         /* We are never in "init in progress state", so this just indicates