diff --git a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/EmmcDevice.c b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/EmmcDevice.c
index ee5314510b..61d351726d 100755
--- a/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/EmmcDevice.c
+++ b/MdeModulePkg/Bus/Pci/SdMmcPciHcDxe/EmmcDevice.c
@@ -51,6 +51,8 @@ EmmcReset (
   SdMmcCmdBlk.ResponseType = 0;
   SdMmcCmdBlk.CommandArgument = 0;
 
+  gBS->Stall (1000);
+
   Status = SdMmcPassThruPassThru (PassThru, Slot, &Packet, NULL);
 
   return Status;