diff --git a/sdk/xtdk/xtguid.h b/sdk/xtdk/xtguid.h
new file mode 100644
index 0000000..b5a2455
--- /dev/null
+++ b/sdk/xtdk/xtguid.h
@@ -0,0 +1,30 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            sdk/xtdk/xtguid.h
+ * DESCRIPTION:     XTOS Globally Unique Identifiers
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#ifndef __XTDK_XTGUID_H
+#define __XTDK_XTGUID_H
+
+
+/* EFI XT protocols GUIDs */
+#define XT_BOOT_LOADER_PROTOCOL_GUID         {0x58544F53, 0x5854, 0x4357, {0x00, 0x42, 0x4F, 0x4F, 0x54, 0x4C, 0x50, 0x54}}
+#define XT_ELF_IMAGE_PROTOCOL_GUID           {0x58544F53, 0x5854, 0x4357, {0x45, 0x4C, 0x46, 0x49, 0x4D, 0x47, 0x50, 0x54}}
+#define XT_FRAMEBUFFER_PROTOCOL_GUID         {0x58544F53, 0x5854, 0x4357, {0x00, 0x00, 0x46, 0x42, 0x55, 0x46, 0x50, 0x54}}
+#define XT_HIVE_IMAGE_PROTOCOL_GUID          {0x58544F53, 0x5854, 0x4357, {0x48, 0x49, 0x56, 0x49, 0x4D, 0x47, 0x50, 0x54}}
+#define XT_PECOFF_IMAGE_PROTOCOL_GUID        {0x58544F53, 0x5854, 0x4357, {0x00, 0x50, 0x45, 0x49, 0x4D, 0x47, 0x50, 0x54}}
+
+/* EFI XT boot protocols GUIDs */
+#define XT_CHAIN_BOOT_PROTOCOL_GUID          {0x58544F53, 0x5854, 0x4357, {0x00, 0x43, 0x48, 0x41, 0x49, 0x4E, 0x50, 0x54}}
+#define XT_LINUX_BOOT_PROTOCOL_GUID          {0x58544F53, 0x5854, 0x4357, {0x00, 0x4C, 0x49, 0x4E, 0x55, 0x58, 0x50, 0x54}}
+#define XT_WINNT_BOOT_PROTOCOL_GUID          {0x58544F53, 0x5854, 0x4357, {0x00, 0x57, 0x49, 0x4E, 0x4E, 0x54, 0x50, 0x54}}
+#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}}
+
+#endif /* __XTDK_XTGUID_H */
diff --git a/sdk/xtdk/xtkmapi.h b/sdk/xtdk/xtkmapi.h
index 514dd43..ecaa892 100644
--- a/sdk/xtdk/xtkmapi.h
+++ b/sdk/xtdk/xtkmapi.h
@@ -21,6 +21,7 @@
 /* Architecture-independent XT API */
 #include <xtbase.h>
 #include <xtdebug.h>
+#include <xtguid.h>
 #include <xtfw.h>
 #include <xtimage.h>
 #include <xtuefi.h>
diff --git a/xtldr/includes/bldefs.h b/xtldr/includes/bldefs.h
index 92cc018..2ff44cb 100644
--- a/xtldr/includes/bldefs.h
+++ b/xtldr/includes/bldefs.h
@@ -19,17 +19,4 @@
 #define XT_BOOT_DEVICE_HARDDISK              0x03
 #define XT_BOOT_DEVICE_RAMDISK               0x04
 
-/* EFI XT protocols GUIDs */
-#define XT_BOOT_LOADER_PROTOCOL_GUID         {0x21FF49E8, 0x5854, 0x424C, {0xE9, 0x11, 0x00, 0x86, 0xE1, 0x2C, 0xD9, 0xC1}}
-#define XT_ELF_IMAGE_PROTOCOL_GUID           {0x9B539887, 0x5854, 0x424C, {0x42, 0xFA, 0x00, 0x90, 0xC9, 0x04, 0x66, 0xA4}}
-#define XT_FRAMEBUFFER_PROTOCOL_GUID         {0x99A87C23, 0x5854, 0x424C, {0xE0, 0x10, 0x00, 0xAA, 0xC0, 0x00, 0xDB, 0xFF}}
-#define XT_HIVE_IMAGE_PROTOCOL_GUID          {0x5A3688A2, 0x5854, 0x424C, {0xBC, 0xDF, 0x00, 0x8F, 0xAA, 0x52, 0x63, 0xD4}}
-#define XT_PECOFF_IMAGE_PROTOCOL_GUID        {0x85DAFF92, 0x5854, 0x424C, {0xB1, 0xBF, 0x00, 0x79, 0x39, 0xEA, 0x6E, 0xFD}}
-
-/* EFI XT boot protocols GUIDs */
-#define XT_CHAIN_BOOT_PROTOCOL_GUID          {0xC4D19201, 0x5854, 0x424C, {0x3C, 0x01, 0x00, 0x64, 0x90, 0x11, 0x9E, 0xA1}}
-#define XT_LINUX_BOOT_PROTOCOL_GUID          {0x6B2A9841, 0x5854, 0x424C, {0x93, 0x71, 0x00, 0x3C, 0x34, 0x9B, 0x11, 0x91}}
-#define XT_WINNT_BOOT_PROTOCOL_GUID          {0x98A80819, 0x5854, 0x424C, {0x37, 0x17, 0x00, 0x2A, 0x55, 0xA3, 0x09, 0xDC}}
-#define XT_XTOS_BOOT_PROTOCOL_GUID           {0xFF8AD077, 0x5854, 0x424C, {0xA1, 0x77, 0x00, 0x92, 0xEF, 0x1C, 0x09, 0xDC}}
-
 #endif /* __XTLDR_BLDEFS_H */