diff --git a/MdeModulePkg/Universal/SetupBrowserDxe/Ui.c b/MdeModulePkg/Universal/SetupBrowserDxe/Ui.c
index d5f3b58b25..de051709c0 100644
--- a/MdeModulePkg/Universal/SetupBrowserDxe/Ui.c
+++ b/MdeModulePkg/Universal/SetupBrowserDxe/Ui.c
@@ -402,6 +402,7 @@ RefreshQuestion (
   @param Context  The input context info related to this event or the status code return to the caller.
 **/
 VOID
+EFIAPI
 RefreshQuestionNotify(
   IN      EFI_EVENT Event,
   IN      VOID      *Context