diff --git a/sdk/xtdk/xtguid.h b/sdk/xtdk/xtguid.h
index b5a2455..0a4074e 100644
--- a/sdk/xtdk/xtguid.h
+++ b/sdk/xtdk/xtguid.h
@@ -24,7 +24,7 @@
 #define XT_XTOS_BOOT_PROTOCOL_GUID           {0x58544F53, 0x5854, 0x4357, {0x00, 0x00, 0x58, 0x54, 0x4F, 0x53, 0x50, 0x54}}
 
 /* XTOS GUIDs */
-#define XTOS_EXECTOS_GUID                    {0x58544F53, 0x5854, 0x4357, {0x00, 0x45 0x58, 0x45, 0x43, 0x54, 0x4F, 0x53}}
-#define XTOS_XTLDR_LOADER_GUID               {0x58544F53, 0x5854, 0x4357, {0x00, 0x00 0x00, 0x58, 0x54, 0x4C, 0x44, 0x52}}
+#define XTOS_EXECTOS_GUID                    {0x58544F53, 0x5854, 0x4357, {0x00, 0x45, 0x58, 0x45, 0x43, 0x54, 0x4F, 0x53}}
+#define XTOS_XTLDR_LOADER_GUID               {0x58544F53, 0x5854, 0x4357, {0x00, 0x00, 0x00, 0x58, 0x54, 0x4C, 0x44, 0x52}}
 
 #endif /* __XTDK_XTGUID_H */