diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index ab502d19b8..09077f0154 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -1533,6 +1533,9 @@ static sd_rsp_type_t sd_cmd_SET_BLOCK_COUNT(SDState *sd, SDRequest req)
     }
 
     sd->multi_blk_cnt = req.arg;
+    if (sd_is_emmc(sd)) {
+        sd->multi_blk_cnt &= 0xffff;
+    }
     trace_sdcard_set_block_count(sd->multi_blk_cnt);
 
     return sd_r1;