diff --git a/MdePkg/Library/UefiLib/UefiLib.inf b/MdePkg/Library/UefiLib/UefiLib.inf
index 01ed92092d..3aced47d2e 100644
--- a/MdePkg/Library/UefiLib/UefiLib.inf
+++ b/MdePkg/Library/UefiLib/UefiLib.inf
@@ -56,6 +56,7 @@
 
 [Guids]
   gEfiEventReadyToBootGuid                      ## SOMETIMES_CONSUMES  ## Event
+  gEfiEventAfterReadyToBootGuid                 ## SOMETIMES_CONSUMES  ## Event
   gEfiEventLegacyBootGuid                       ## SOMETIMES_CONSUMES  ## Event
   gEfiGlobalVariableGuid                        ## SOMETIMES_CONSUMES  ## Variable
   gEfiAcpi20TableGuid                           ## SOMETIMES_CONSUMES  ## SystemTable
diff --git a/MdePkg/Library/UefiLib/UefiNotTiano.c b/MdePkg/Library/UefiLib/UefiNotTiano.c
index d84e91fd01..8c8d9b29f8 100644
--- a/MdePkg/Library/UefiLib/UefiNotTiano.c
+++ b/MdePkg/Library/UefiLib/UefiNotTiano.c
@@ -222,12 +222,26 @@ EfiSignalEventReadyToBoot (
 {
   EFI_STATUS  Status;
   EFI_EVENT   ReadyToBootEvent;
+  EFI_EVENT   AfterReadyToBootEvent;
 
   Status = EfiCreateEventReadyToBoot (&ReadyToBootEvent);
   if (!EFI_ERROR (Status)) {
     gBS->SignalEvent (ReadyToBootEvent);
     gBS->CloseEvent (ReadyToBootEvent);
   }
+
+  Status = gBS->CreateEventEx (
+                  EVT_NOTIFY_SIGNAL,
+                  TPL_CALLBACK,
+                  EfiEventEmptyFunction,
+                  NULL,
+                  &gEfiEventAfterReadyToBootGuid,
+                  &AfterReadyToBootEvent
+                  );
+  if (!EFI_ERROR (Status)) {
+    gBS->SignalEvent (AfterReadyToBootEvent);
+    gBS->CloseEvent (AfterReadyToBootEvent);
+  }
 }
 
 /**