diff --git a/MdePkg/Library/UefiScsiLib/UefiScsiLib.c b/MdePkg/Library/UefiScsiLib/UefiScsiLib.c
index 6bfc8cfc35..83b4099ea2 100644
--- a/MdePkg/Library/UefiScsiLib/UefiScsiLib.c
+++ b/MdePkg/Library/UefiScsiLib/UefiScsiLib.c
@@ -627,7 +627,7 @@ ScsiWrite10Command (
   *HostAdapterStatus            = CommandPacket.HostAdapterStatus;
   *TargetStatus                 = CommandPacket.TargetStatus;
   *SenseDataLength              = CommandPacket.SenseDataLength;
-  *DataLength                   = CommandPacket.InTransferLength;
+  *DataLength                   = CommandPacket.OutTransferLength;
 
   return Status;
 }