diff --git a/cet/shstk_alloc.c b/cet/shstk_alloc.c
index d04bb6f7..510bdd20 100644
--- a/cet/shstk_alloc.c
+++ b/cet/shstk_alloc.c
@@ -33,7 +33,7 @@
 
 #define SHADOW_STACK_SET_TOKEN	0x1
 #ifndef __NR_map_shadow_stack
-#define __NR_map_shadow_stack 451
+#define __NR_map_shadow_stack 453
 #endif
 
 size_t shstk_size = 0x200000;
diff --git a/cet/shstk_cp.c b/cet/shstk_cp.c
index d94e2d39..02b8d39b 100644
--- a/cet/shstk_cp.c
+++ b/cet/shstk_cp.c
@@ -30,10 +30,6 @@
 /* ARCH_SHSTK_ features bits */
 #define ARCH_SHSTK_SHSTK		(1ULL <<  0)
 #define ARCH_SHSTK_WRSS			(1ULL <<  1)
-/* It's from arch/x86/entry/syscalls/syscall_64.tbl file. */
-#ifndef __NR_map_shadow_stack
-#define __NR_map_shadow_stack 451
-#endif
 
 #define rdssp() ({						\
 	unsigned long _ret;					\
diff --git a/cet/shstk_huge_page.c b/cet/shstk_huge_page.c
index 55e526f1..8c2822bd 100644
--- a/cet/shstk_huge_page.c
+++ b/cet/shstk_huge_page.c
@@ -20,7 +20,7 @@
 #define SHADOW_STACK_SET_TOKEN	0x1
 /* It's from arch/x86/entry/syscalls/syscall_64.tbl file. */
 #ifndef __NR_map_shadow_stack
-#define __NR_map_shadow_stack 451
+#define __NR_map_shadow_stack 453
 #endif
 
 #define PASS		0
diff --git a/cet/shstk_unlock_test.c b/cet/shstk_unlock_test.c
index 2d4c643c..9c035606 100644
--- a/cet/shstk_unlock_test.c
+++ b/cet/shstk_unlock_test.c
@@ -39,10 +39,7 @@
 /* ARCH_SHSTK_ features bits */
 #define ARCH_SHSTK_SHSTK		(1ULL <<  0)
 #define ARCH_SHSTK_WRSS			(1ULL <<  1)
-/* It's from arch/x86/entry/syscalls/syscall_64.tbl file. */
-#ifndef __NR_map_shadow_stack
-#define __NR_map_shadow_stack 451
-#endif
+
 /* It's from include/uapi/linux/elf.h. */
 #define NT_X86_SHSTK		0x204
 #define NT_X86_XSTATE		0x202
diff --git a/cet/test_shadow_stack.c b/cet/test_shadow_stack.c
index 4f8915f1..4b7753ec 100644
--- a/cet/test_shadow_stack.c
+++ b/cet/test_shadow_stack.c
@@ -51,7 +51,7 @@
 #define ARCH_SHSTK_WRSS			(1ULL <<  1)
 /* It's from arch/x86/entry/syscalls/syscall_64.tbl file. */
 #ifndef __NR_map_shadow_stack
-#define __NR_map_shadow_stack 451
+#define __NR_map_shadow_stack 453
 #endif
 
 #if (__GNUC__ < 8) || (__GNUC__ == 8 && __GNUC_MINOR__ < 5)
diff --git a/cet/wrss.c b/cet/wrss.c
index abeb6da2..71e91192 100644
--- a/cet/wrss.c
+++ b/cet/wrss.c
@@ -35,7 +35,7 @@
 #define ARCH_SHSTK_WRSS			(1ULL <<  1)
 /* It's from arch/x86/entry/syscalls/syscall_64.tbl file. */
 #ifndef __NR_map_shadow_stack
-#define __NR_map_shadow_stack 451
+#define __NR_map_shadow_stack 453
 #endif
 
 /* err() exits and will not return */