diff --git a/libc/libc.x86_64.map b/libc/libc.x86_64.map
index 6b0e415..880ed80 100644
--- a/libc/libc.x86_64.map
+++ b/libc/libc.x86_64.map
@@ -74,6 +74,7 @@
     __p_type_syms; # var
     __poll_chk; # introduced=23
     __ppoll_chk; # introduced=23
+    __ppoll64_chk; # introduced=28
     __pread64_chk; # introduced=23
     __pread_chk; # introduced=23
     __progname; # var