diff --git a/libc/include/sys/xattr.h b/libc/include/sys/xattr.h
index 37e352d..d15b3fc 100644
--- a/libc/include/sys/xattr.h
+++ b/libc/include/sys/xattr.h
@@ -35,25 +35,25 @@
 
 __BEGIN_DECLS
 
-int fsetxattr(int fd, const char* name, const void* value, size_t size, int flags)
+int fsetxattr(int __fd, const char* __name, const void* __value, size_t __size, int __flags)
   __INTRODUCED_IN(16);
-int setxattr(const char* path, const char* name, const void* value, size_t size, int flags)
+int setxattr(const char* __path, const char* __name, const void* __value, size_t __size, int __flags)
   __INTRODUCED_IN(16);
-int lsetxattr(const char* path, const char* name, const void* value, size_t size, int flags)
+int lsetxattr(const char* __path, const char* __name, const void* __value, size_t __size, int __flags)
   __INTRODUCED_IN(16);
 
-ssize_t fgetxattr(int fd, const char* name, void* value, size_t size) __INTRODUCED_IN(16);
-ssize_t getxattr(const char* path, const char* name, void* value, size_t size) __INTRODUCED_IN(16);
-ssize_t lgetxattr(const char* path, const char* name, void* value, size_t size) __INTRODUCED_IN(16);
+ssize_t fgetxattr(int __fd, const char* __name, void* __value, size_t __size) __INTRODUCED_IN(16);
+ssize_t getxattr(const char* __path, const char* __name, void* __value, size_t __size) __INTRODUCED_IN(16);
+ssize_t lgetxattr(const char* __path, const char* __name, void* __value, size_t __size) __INTRODUCED_IN(16);
 
-ssize_t listxattr(const char* path, char* list, size_t size) __INTRODUCED_IN(16);
-ssize_t llistxattr(const char* path, char* list, size_t size) __INTRODUCED_IN(16);
-ssize_t flistxattr(int fd, char* list, size_t size) __INTRODUCED_IN(16);
+ssize_t listxattr(const char* __path, char* __list, size_t __size) __INTRODUCED_IN(16);
+ssize_t llistxattr(const char* __path, char* __list, size_t __size) __INTRODUCED_IN(16);
+ssize_t flistxattr(int __fd, char* __list, size_t __size) __INTRODUCED_IN(16);
 
-int removexattr(const char* path, const char* name) __INTRODUCED_IN(16);
-int lremovexattr(const char* path, const char* name) __INTRODUCED_IN(16);
-int fremovexattr(int fd, const char* name) __INTRODUCED_IN(16);
+int removexattr(const char* __path, const char* __name) __INTRODUCED_IN(16);
+int lremovexattr(const char* __path, const char* __name) __INTRODUCED_IN(16);
+int fremovexattr(int __fd, const char* __name) __INTRODUCED_IN(16);
 
 __END_DECLS
 
-#endif /* _SYS_XATTR_H_ */
+#endif