diff --git a/src/sys/shutdown.c b/src/sys/shutdown.c
index 0cbd3485..bcbe887e 100644
--- a/src/sys/shutdown.c
+++ b/src/sys/shutdown.c
@@ -28,6 +28,7 @@ NTSTATUS FspShutdown(
 {
     FSP_ENTER_MJ(PAGED_CODE());
 
+    (PVOID)IrpSp;
     FSP_RETURN(Result = STATUS_INVALID_DEVICE_REQUEST);
 
     FSP_LEAVE_MJ("%s", "");