diff --git a/tools/arch/x86/include/asm/unistd_32.h b/tools/arch/x86/include/asm/unistd_32.h
index 88b3f8c8920cac566838d1443e40d49b52e612df..0e4312ffc945e3d23e3f2c161cc7ca3e0d55185b 100644
--- a/tools/arch/x86/include/asm/unistd_32.h
+++ b/tools/arch/x86/include/asm/unistd_32.h
@@ -10,3 +10,6 @@
 #ifndef __NR_getcpu
 # define __NR_getcpu 318
 #endif
+#ifndef __NR_setns
+# define __NR_setns 346
+#endif
diff --git a/tools/arch/x86/include/asm/unistd_64.h b/tools/arch/x86/include/asm/unistd_64.h
index fbdb70ee8837ef1ec34b9aff174faf9efe87de07..dd56bb36132a58f72ccc025db500a1523d703f5c 100644
--- a/tools/arch/x86/include/asm/unistd_64.h
+++ b/tools/arch/x86/include/asm/unistd_64.h
@@ -10,3 +10,6 @@
 #ifndef __NR_getcpu
 # define __NR_getcpu 309
 #endif
+#ifndef __NR_setns
+#define __NR_setns 308
+#endif