diff --git a/libc/arch-arm/syscalls/dup.S b/libc/arch-arm/syscalls/dup.S
index 5a5d050..b0c1cda 100644
--- a/libc/arch-arm/syscalls/dup.S
+++ b/libc/arch-arm/syscalls/dup.S
@@ -1,13 +1,8 @@
 /* autogenerated by gensyscalls.py */
+#include <machine/asm.h>
 #include <sys/linux-syscalls.h>
 
-    .text
-    .type dup, #function
-    .globl dup
-    .align 4
-    .fnstart
-
-dup:
+ENTRY(dup)
     .save   {r4, r7}
     stmfd   sp!, {r4, r7}
     ldr     r7, =__NR_dup
@@ -16,4 +11,4 @@
     movs    r0, r0
     bxpl    lr
     b       __set_syscall_errno
-    .fnend
+END(dup)