diff --git a/toolchain/patches/binutils-2.43.1-montauk.patch b/toolchain/patches/binutils-2.43.1-montauk.patch
index 31bf02d..99a00b8 100644
--- a/toolchain/patches/binutils-2.43.1-montauk.patch
+++ b/toolchain/patches/binutils-2.43.1-montauk.patch
@@ -45,3 +45,21 @@
  x86_64-*-elf* | x86_64-*-rtems* | x86_64-*-fuchsia* | x86_64-*-genode*)
  			targ_emul=elf_x86_64
  			targ_extra_emuls="elf_i386 elf_iamcu elf32_x86_64"
+--- a/bfd/sysdep.h
++++ b/bfd/sysdep.h
+@@ -27,6 +27,15 @@
+ #endif
+ 
+ #include "config.h"
++
++/* MontaukOS provides no runtime TLS yet (no FS-base setup, no PT_TLS
++   handling in the ELF loader), so a _Thread_local access traps at
++   %fs:0. Degrade BFD's thread-local error state to plain globals;
++   the native tools are single-threaded. */
++#ifdef __montauk__
++#undef TLS
++#define TLS
++#endif
+ #include <stdio.h>
+ 
+ #ifdef HAVE_SYS_TYPES_H