diff --git a/include/elf.h b/include/elf.h
index e3edbccc..a24ea9b7 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -566,6 +566,7 @@ typedef struct {
 #define NT_ARM_TLS	0x401
 #define NT_ARM_HW_BREAK	0x402
 #define NT_ARM_HW_WATCH	0x403
+#define NT_ARM_SYSTEM_CALL	0x404
 #define NT_METAG_CBUF	0x500
 #define NT_METAG_RPIPE	0x501
 #define NT_METAG_TLS	0x502