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-rw-r--r--replacements.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/replacements.c b/replacements.c
index 48dc4378..5dfa3556 100644
--- a/replacements.c
+++ b/replacements.c
@@ -70,6 +70,9 @@ static EFI_HANDLE last_loaded_image;
void
unhook_system_services(void)
{
+ if (!systab)
+ return;
+
systab->BootServices->Exit = system_exit;
systab->BootServices->LoadImage = system_load_image;
systab->BootServices->StartImage = system_start_image;