diff --git a/include/nlohmann/detail/output/binary_writer.hpp b/include/nlohmann/detail/output/binary_writer.hpp
index 6d7ced0b6..75582c0e9 100644
--- a/include/nlohmann/detail/output/binary_writer.hpp
+++ b/include/nlohmann/detail/output/binary_writer.hpp
@@ -2084,6 +2084,7 @@ class binary_writer
                 case input_format_t::bson:
                 case input_format_t::json:
                 case input_format_t::ubjson:
+                case input_format_t::bjdata:
                 default:
                     break;
                     // LCOV_EXCL_STOP
diff --git a/tests/src/unit-bon8.cpp b/tests/src/unit-bon8.cpp
index 047e4e5af..6953adf0e 100644
--- a/tests/src/unit-bon8.cpp
+++ b/tests/src/unit-bon8.cpp
@@ -303,7 +303,7 @@ TEST_CASE("BON8")
                 SECTION("-2147483649")
                 {
                     // cannot use -2147483649 directly, see https://developercommunity.visualstudio.com/t/-2147483648-c4146-error/141813#T-N229960
-                    json j = std::int64_t(-2147483647) - 2;
+                    json j = static_cast<std::int64_t>(-2147483647) - 2;
                     std::vector<uint8_t> expected = {0x8D, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0xFF, 0xFF, 0xFF};
                     const auto result = json::to_bon8(j);
                     CHECK(result == expected);