diff --git a/libc/arch-x86_64/syscalls/getitimer.S b/libc/arch-x86_64/syscalls/getitimer.S
index b6a6e8e..2d76430 100644
--- a/libc/arch-x86_64/syscalls/getitimer.S
+++ b/libc/arch-x86_64/syscalls/getitimer.S
@@ -2,6 +2,8 @@
 
 #include <private/bionic_asm.h>
 
+    .hidden __set_errno
+
 ENTRY(getitimer)
     movl    $__NR_getitimer, %eax
     syscall