diff --git a/libc/arch-x86/syscalls/sigaltstack.S b/libc/arch-x86/syscalls/sigaltstack.S
index d39419d..830c99f 100644
--- a/libc/arch-x86/syscalls/sigaltstack.S
+++ b/libc/arch-x86/syscalls/sigaltstack.S
@@ -1,12 +1,8 @@
 /* autogenerated by gensyscalls.py */
+#include <machine/asm.h>
 #include <sys/linux-syscalls.h>
 
-    .text
-    .type sigaltstack, @function
-    .globl sigaltstack
-    .align 4
-
-sigaltstack:
+ENTRY(sigaltstack)
     pushl   %ebx
     pushl   %ecx
     mov     12(%esp), %ebx
@@ -24,3 +20,4 @@
     popl    %ecx
     popl    %ebx
     ret
+END(sigaltstack)