diff --git a/libc/libc.arm64.map b/libc/libc.arm64.map
index 880ed80..5e6f991 100644
--- a/libc/libc.arm64.map
+++ b/libc/libc.arm64.map
@@ -656,7 +656,7 @@
     posix_fallocate; # introduced=21
     posix_fallocate64; # introduced=21
     posix_madvise; # introduced=23
-    posix_memalign; # introduced-arm=16 introduced-arm64=21 introduced-mips=16 introduced-mips64=21 introduced-x86=16 introduced-x86_64=21
+    posix_memalign; # introduced=17
     posix_openpt; # introduced=21
     ppoll; # introduced=21
     prctl;