diff --git a/libc/arch-x86/syscalls/dup2.S b/libc/arch-x86/syscalls/dup2.S
index 59f8329..43def66 100644
--- a/libc/arch-x86/syscalls/dup2.S
+++ b/libc/arch-x86/syscalls/dup2.S
@@ -1,12 +1,8 @@
 /* autogenerated by gensyscalls.py */
+#include <machine/asm.h>
 #include <sys/linux-syscalls.h>
 
-    .text
-    .type dup2, @function
-    .globl dup2
-    .align 4
-
-dup2:
+ENTRY(dup2)
     pushl   %ebx
     pushl   %ecx
     mov     12(%esp), %ebx
@@ -24,3 +20,4 @@
     popl    %ecx
     popl    %ebx
     ret
+END(dup2)