diff --git a/libc/kernel/arch-arm/asm/ucontext.h b/libc/kernel/arch-arm/asm/ucontext.h
index 769f6945f..f54a7f117 100644
--- a/libc/kernel/arch-arm/asm/ucontext.h
+++ b/libc/kernel/arch-arm/asm/ucontext.h
@@ -27,7 +27,7 @@ struct ucontext {
  struct sigcontext uc_mcontext;
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
  sigset_t uc_sigmask;
- int __unused[32 - (sizeof (sigset_t) / sizeof (int))];
+ int __linux_unused[32 - (sizeof (sigset_t) / sizeof (int))];
  unsigned long uc_regspace[128] __attribute__((__aligned__(8)));
 };
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
diff --git a/libc/kernel/common/linux/sysctl.h b/libc/kernel/common/linux/sysctl.h
index 46e5e6779..5769259a0 100644
--- a/libc/kernel/common/linux/sysctl.h
+++ b/libc/kernel/common/linux/sysctl.h
@@ -34,7 +34,7 @@ struct __sysctl_args {
  size_t __user *oldlenp;
  void __user *newval;
  size_t newlen;
- unsigned long __unused[4];
+ unsigned long __linux_unused[4];
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 };
 enum
diff --git a/libc/kernel/tools/defaults.py b/libc/kernel/tools/defaults.py
index 7eeffb4a5..6c7efd689 100644
--- a/libc/kernel/tools/defaults.py
+++ b/libc/kernel/tools/defaults.py
@@ -51,6 +51,7 @@ kernel_default_arch_macros = {
 # Replace tokens in the output according to this mapping
 kernel_token_replacements = {
     "asm": "__asm__",
+    "__unused": "__linux_unused", # The kernel usage of __unused conflicts with the macro defined in sys/cdefs.h
     }
 
 # this is the set of known static inline functions that we want to keep