diff --git a/libc/kernel/uapi/asm-generic/siginfo.h b/libc/kernel/uapi/asm-generic/siginfo.h
index 16a85c3..8bcbabb 100644
--- a/libc/kernel/uapi/asm-generic/siginfo.h
+++ b/libc/kernel/uapi/asm-generic/siginfo.h
@@ -209,7 +209,8 @@
 #define POLL_HUP 6
 #define NSIGPOLL 6
 #define SYS_SECCOMP 1
-#define NSIGSYS 1
+#define SYS_USER_DISPATCH 2
+#define NSIGSYS 2
 #define EMT_TAGOVF 1
 #define NSIGEMT 1
 #define SIGEV_SIGNAL 0