diff --git a/MokManager.c b/MokManager.c
index 88a396d..1ef7e51 100644
--- a/MokManager.c
+++ b/MokManager.c
@@ -17,6 +17,8 @@
 
 #define EFI_VARIABLE_APPEND_WRITE 0x00000040
 
+EFI_GUID SHIM_LOCK_GUID = { 0x605dab50, 0xe046, 0x4300, {0xab, 0xb6, 0x3d, 0xd8, 0x10, 0xdd, 0x8b, 0x23} };
+
 #define CERT_STRING L"Select an X509 certificate to enroll:\n\n"
 #define HASH_STRING L"Select a file to trust:\n\n"