diff --git a/libc/arch-arm64/syscalls/fchown.S b/libc/arch-arm64/syscalls/fchown.S
index 8e9db62..a689ba0 100644
--- a/libc/arch-arm64/syscalls/fchown.S
+++ b/libc/arch-arm64/syscalls/fchown.S
@@ -2,6 +2,8 @@
 
 #include <private/bionic_asm.h>
 
+    .hidden __set_errno
+
 ENTRY(fchown)
     mov     x8, __NR_fchown
     svc     #0