diff --git a/MdeModulePkg/Universal/Console/TerminalDxe/TerminalConIn.c b/MdeModulePkg/Universal/Console/TerminalDxe/TerminalConIn.c
index 6179b55b04..d80c3d5c6f 100644
--- a/MdeModulePkg/Universal/Console/TerminalDxe/TerminalConIn.c
+++ b/MdeModulePkg/Universal/Console/TerminalDxe/TerminalConIn.c
@@ -368,7 +368,7 @@ TerminalConInRegisterKeyNotify (
 
   NewNotify->Signature         = TERMINAL_CONSOLE_IN_EX_NOTIFY_SIGNATURE;
   NewNotify->KeyNotificationFn = KeyNotificationFunction;
-  CopyMem (&NewNotify->KeyData, KeyData, sizeof (KeyData));
+  CopyMem (&NewNotify->KeyData, KeyData, sizeof (EFI_KEY_DATA));
   InsertTailList (&TerminalDevice->NotifyList, &NewNotify->NotifyEntry);
 
   *NotifyHandle                = NewNotify;