diff --git a/libc/arch-arm/syscalls.mk b/libc/arch-arm/syscalls.mk
index 75b6133..f8bb15a 100644
--- a/libc/arch-arm/syscalls.mk
+++ b/libc/arch-arm/syscalls.mk
@@ -23,6 +23,7 @@
 syscall_src += arch-arm/syscalls/__rt_sigsuspend.S
 syscall_src += arch-arm/syscalls/__rt_sigtimedwait.S
 syscall_src += arch-arm/syscalls/__sched_getaffinity.S
+syscall_src += arch-arm/syscalls/__set_tid_address.S
 syscall_src += arch-arm/syscalls/__set_tls.S
 syscall_src += arch-arm/syscalls/__sigaction.S
 syscall_src += arch-arm/syscalls/__statfs64.S
diff --git a/libc/arch-arm/syscalls/__set_tid_address.S b/libc/arch-arm/syscalls/__set_tid_address.S
new file mode 100644
index 0000000..b4b42e7
--- /dev/null
+++ b/libc/arch-arm/syscalls/__set_tid_address.S
@@ -0,0 +1,14 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(__set_tid_address)
+    mov     ip, r7
+    ldr     r7, =__NR_set_tid_address
+    swi     #0
+    mov     r7, ip
+    cmn     r0, #(MAX_ERRNO + 1)
+    bxls    lr
+    neg     r0, r0
+    b       __set_errno
+END(__set_tid_address)