diff --git a/sdk/xtdk/amd64/ketypes.h b/sdk/xtdk/amd64/ketypes.h
index 1299161..ccb7d9d 100644
--- a/sdk/xtdk/amd64/ketypes.h
+++ b/sdk/xtdk/amd64/ketypes.h
@@ -108,9 +108,6 @@
 /* Static Kernel-Mode address start */
 #define KSEG0_BASE                        0xFFFFF80000000000
 
-/* XTOS Kernel address base */
-#define KSEG0_KERNEL_BASE                 0x0000000800000000
-
 /* XTOS Kernel stack size */
 #define KERNEL_STACK_SIZE                 0x8000
 
diff --git a/sdk/xtdk/i686/ketypes.h b/sdk/xtdk/i686/ketypes.h
index f62ff74..32697c4 100644
--- a/sdk/xtdk/i686/ketypes.h
+++ b/sdk/xtdk/i686/ketypes.h
@@ -128,9 +128,6 @@
 /* Static Kernel-Mode address start */
 #define KSEG0_BASE                        0x80000000
 
-/* XTOS Kernel address base */
-#define KSEG0_KERNEL_BASE                 0x01800000
-
 /* XTOS Kernel stack size */
 #define KERNEL_STACK_SIZE                 0x4000