diff --git a/libc/include/getopt.h b/libc/include/getopt.h
index 46d2eb7..c5a6106 100644
--- a/libc/include/getopt.h
+++ b/libc/include/getopt.h
@@ -59,10 +59,8 @@
 };
 
 __BEGIN_DECLS
-int	getopt_long(int, char * const *, const char *,
-	const struct option *, int *);
-int	getopt_long_only(int, char * const *, const char *,
-	const struct option *, int *);
+int getopt_long(int __argc, char* const* __argv, const char* __options, const struct option* __long_options, int* __long_index);
+int getopt_long_only(int __argc, char* const* __argv, const char* __options, const struct option* __long_options, int* __long_index);
 
 #ifndef _OPTRESET_DECLARED
 #define	_OPTRESET_DECLARED
@@ -70,4 +68,4 @@
 #endif
 __END_DECLS
  
-#endif /* !_GETOPT_H_ */
+#endif