diff --git a/libc/kernel/uapi/asm-mips/asm/ioctls.h b/libc/kernel/uapi/asm-mips/asm/ioctls.h
index a4a40b0..694546f 100644
--- a/libc/kernel/uapi/asm-mips/asm/ioctls.h
+++ b/libc/kernel/uapi/asm-mips/asm/ioctls.h
@@ -85,6 +85,8 @@
 #define TIOCGPTLCK _IOR('T', 0x39, int)
 #define TIOCGEXCL _IOR('T', 0x40, int)
 #define TIOCGPTPEER _IO('T', 0x41)
+#define TIOCGISO7816 _IOR('T', 0x42, struct serial_iso7816)
+#define TIOCSISO7816 _IOWR('T', 0x43, struct serial_iso7816)
 #define TIOCSCTTY 0x5480
 #define TIOCGSOFTCAR 0x5481
 #define TIOCSSOFTCAR 0x5482
diff --git a/libc/kernel/uapi/asm-mips/asm/siginfo.h b/libc/kernel/uapi/asm-mips/asm/siginfo.h
index c37107b..c9efb21 100644
--- a/libc/kernel/uapi/asm-mips/asm/siginfo.h
+++ b/libc/kernel/uapi/asm-mips/asm/siginfo.h
@@ -20,13 +20,6 @@
 #define _UAPI_ASM_SIGINFO_H
 #define __ARCH_SIGEV_PREAMBLE_SIZE (sizeof(long) + 2 * sizeof(int))
 #undef __ARCH_SI_TRAPNO
-#if _MIPS_SZLONG == 32
-#define __ARCH_SI_PREAMBLE_SIZE (3 * sizeof(int))
-#elif _MIPS_SZLONG==64
-#define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int))
-#else
-#error _MIPS_SZLONG neither 32 nor 64
-#endif
 #define __ARCH_HAS_SWAPPED_SIGINFO
 #include <asm-generic/siginfo.h>
 #undef SI_ASYNCIO