diff --git a/examples/0036.at/chmod.cc b/examples/0036.at/chmod.cc
index f86c46c1..9e67d7a2 100644
--- a/examples/0036.at/chmod.cc
+++ b/examples/0036.at/chmod.cc
@@ -18,7 +18,12 @@ int main(int argc, char **argv)
 #endif
 	{
 		::std::uint_least32_t perm;
-		::fast_io::scan(::fast_io::mnp::os_c_str(argv[2]), perm);
+		auto const [p1, e1] = ::fast_io::parse_by_scan(argv[2], argv[2] + ::fast_io::cstr_len(argv[2]), ::fast_io::mnp::base_get<8>(perm));
+		if (e1 != ::fast_io::parse_code::ok)
+		{
+			::fast_io::throw_parse_code(e1);
+		}
+
 		::fast_io::native_fchmodat(::fast_io::at_fdcwd(), fast_io::mnp::os_c_str(argv[1]), static_cast<::fast_io::perms>(perm));
 	}
 #if __cpp_exceptions
diff --git a/examples/0036.at/chown.cc b/examples/0036.at/chown.cc
index 2a32969a..264d8e78 100644
--- a/examples/0036.at/chown.cc
+++ b/examples/0036.at/chown.cc
@@ -20,12 +20,12 @@ int main(int argc, char **argv)
 		::std::uint_least64_t o;
 		::std::uint_least64_t g;
 
-		auto const [p1,e1]= ::fast_io::parse_by_scan(argv[2], argv[2] + ::fast_io::cstr_len(argv[2]), ::fast_io::mnp::base_get<8>(o));
+		auto const [p1,e1]= ::fast_io::parse_by_scan(argv[2], argv[2] + ::fast_io::cstr_len(argv[2]), o);
 		if (e1 != ::fast_io::parse_code::ok)
 		{
 			::fast_io::throw_parse_code(e1);
 		}
-		auto const [p2, e2] = ::fast_io::parse_by_scan(argv[3], argv[3] + ::fast_io::cstr_len(argv[3]), ::fast_io::mnp::base_get<8>(g));
+		auto const [p2, e2] = ::fast_io::parse_by_scan(argv[3], argv[3] + ::fast_io::cstr_len(argv[3]), g);
 		if (e2 != ::fast_io::parse_code::ok)
 		{
 			::fast_io::throw_parse_code(e2);