diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 698d64d2cb..552957b2e5 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -261,7 +261,6 @@ static const char *sd_acmd_name(SDState *sd, uint8_t cmd)
         [14] = "DPS_spec",                  [15] = "DPS_spec",
         [16] = "DPS_spec",
         [18] = "SECU_spec",
-        [51] = "SEND_SCR",
         [52] = "SECU_spec",                 [53] = "SECU_spec",
         [54] = "SECU_spec",
         [56] = "SECU_spec",                 [57] = "SECU_spec",
@@ -1739,6 +1738,12 @@ static sd_rsp_type_t sd_acmd_SET_CLR_CARD_DETECT(SDState *sd, SDRequest req)
     return sd_r1;
 }
 
+/* ACMD51 */
+static sd_rsp_type_t sd_acmd_SEND_SCR(SDState *sd, SDRequest req)
+{
+    return sd_cmd_to_sendingdata(sd, req, 0, sd->scr, sizeof(sd->scr));
+}
+
 static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req)
 {
     uint64_t addr;
@@ -1863,16 +1868,6 @@ static sd_rsp_type_t sd_app_command(SDState *sd,
     }
 
     switch (req.cmd) {
-    case 51:  /* ACMD51: SEND_SCR */
-        switch (sd->state) {
-        case sd_transfer_state:
-            return sd_cmd_to_sendingdata(sd, req, 0, sd->scr, sizeof(sd->scr));
-
-        default:
-            break;
-        }
-        break;
-
     case 18:    /* Reserved for SD security applications */
     case 25:
     case 26:
@@ -2333,6 +2328,7 @@ static const SDProto sd_proto_spi = {
         [23] = {8,  sd_spi, "SET_WR_BLK_ERASE_COUNT", sd_acmd_SET_WR_BLK_ERASE_COUNT},
         [41] = {8,  sd_spi, "SEND_OP_COND", spi_cmd_SEND_OP_COND},
         [42] = {8,  sd_spi, "SET_CLR_CARD_DETECT", sd_acmd_SET_CLR_CARD_DETECT},
+        [51] = {8,  sd_spi, "SEND_SCR", sd_acmd_SEND_SCR},
     },
 };
 
@@ -2393,6 +2389,7 @@ static const SDProto sd_proto_sd = {
         [23] = {8,  sd_ac,   "SET_WR_BLK_ERASE_COUNT", sd_acmd_SET_WR_BLK_ERASE_COUNT},
         [41] = {8,  sd_bcr,  "SD_APP_OP_COND", sd_acmd_SD_APP_OP_COND},
         [42] = {8,  sd_ac,   "SET_CLR_CARD_DETECT", sd_acmd_SET_CLR_CARD_DETECT},
+        [51] = {8,  sd_adtc, "SEND_SCR", sd_acmd_SEND_SCR},
     },
 };