diff --git a/libc/include/bits/glibc-syscalls.h b/libc/include/bits/glibc-syscalls.h
index 3f99dcb..f08c614 100644
--- a/libc/include/bits/glibc-syscalls.h
+++ b/libc/include/bits/glibc-syscalls.h
@@ -1,6 +1,15 @@
 /* Generated by gensyscalls.py. Do not edit. */
 #ifndef _BIONIC_BITS_GLIBC_SYSCALLS_H_
 #define _BIONIC_BITS_GLIBC_SYSCALLS_H_
+#if defined(__NR__llseek)
+  #define SYS__llseek __NR__llseek
+#endif
+#if defined(__NR__newselect)
+  #define SYS__newselect __NR__newselect
+#endif
+#if defined(__NR__sysctl)
+  #define SYS__sysctl __NR__sysctl
+#endif
 #if defined(__NR_accept)
   #define SYS_accept __NR_accept
 #endif
diff --git a/libc/tools/gensyscalls.py b/libc/tools/gensyscalls.py
index ab7c247..e6240a1 100755
--- a/libc/tools/gensyscalls.py
+++ b/libc/tools/gensyscalls.py
@@ -568,7 +568,7 @@
 
         # Collect the set of all syscalls for all architectures.
         syscalls = set()
-        pattern = re.compile(r'^\s*#\s*define\s*__NR_([a-z]\S+)')
+        pattern = re.compile(r'^\s*#\s*define\s*__NR_([a-z_]\S+)')
         for unistd_h in ["kernel/uapi/asm-generic/unistd.h",
                          "kernel/uapi/asm-arm/asm/unistd.h",
                          "kernel/uapi/asm-arm/asm/unistd-common.h",