diff --git a/src/class/msc/msc_device.c b/src/class/msc/msc_device.c
index e09a2b11a..0c18b0ced 100644
--- a/src/class/msc/msc_device.c
+++ b/src/class/msc/msc_device.c
@@ -753,6 +753,7 @@ static int32_t proc_builtin_scsi(uint8_t lun, uint8_t const scsi_cmd[16], uint8_
           .is_removable         = 1,
           .version              = 2,
           .response_data_format = 2,
+          .additional_length    = sizeof(scsi_inquiry_resp_t) - 5,
       };
 
       // vendor_id, product_id, product_rev is space padded string