diff --git a/libc/include/stdlib.h b/libc/include/stdlib.h
index 8a5956cc..02d7b086 100644
--- a/libc/include/stdlib.h
+++ b/libc/include/stdlib.h
@@ -41,9 +41,9 @@ typedef struct
 	long long rem;	/* remainder */
 } lldiv_t;
 
-[[noreturn]] void	_Exit(int status);
+void				_Exit(int status) __attribute__((__noreturn__));
 long				a64l(const char* s);
-[[noreturn]] void	abort(void);
+void				abort(void) __attribute__((__noreturn__));
 int					abs(int i);
 int					atexit(void (*func)(void));
 double				atof(const char* str);
diff --git a/libc/include/unistd.h b/libc/include/unistd.h
index 21b6f3ab..8d47566e 100644
--- a/libc/include/unistd.h
+++ b/libc/include/unistd.h
@@ -132,7 +132,7 @@ size_t				confstr(int name, char* buf, size_t len);
 char*				crypt(const char* key, const char* salt);
 int					dup(int fildes);
 int					dup2(int fildes, int fildes2);
-[[noreturn]] void	_exit(int status);
+void				_exit(int status) __attribute__((__noreturn__));
 void				encrypt(char block[64], int edflag);
 int					execl(const char* path, const char* arg0, ...);
 int					execle(const char* path, const char* arg0, ...);