diff --git a/MdePkg/Include/Protocol/FormBrowser2.h b/MdePkg/Include/Protocol/FormBrowser2.h
index 436a7723c1..bc214caa7d 100644
--- a/MdePkg/Include/Protocol/FormBrowser2.h
+++ b/MdePkg/Include/Protocol/FormBrowser2.h
@@ -138,10 +138,13 @@ EFI_STATUS
   @retval EFI_SUCCESS           The results have been distributed or are
                                 awaiting distribution.
 
-  @retval EFI_OUT_OF_RESOURCES  The ResultsDataSize specified
+  @retval EFI_BUFFER_TOO_SMALL  The ResultsDataSize specified
                                 was too small to contain the
                                 results data.
 
+  @retval EFI_UNSUPPORTED       Uncommitted browser state is not available
+                                at the current stage of execution.
+
 **/
 typedef
 EFI_STATUS