diff --git a/include/nlohmann/detail/bit_ops.hpp b/include/nlohmann/detail/bit_ops.hpp
index 42a09b68e..c9424a6d1 100644
--- a/include/nlohmann/detail/bit_ops.hpp
+++ b/include/nlohmann/detail/bit_ops.hpp
@@ -30,7 +30,7 @@ inline int count_leading_zeros(std::uint64_t x) noexcept
 #if defined(__GNUC__) || defined(__clang__)
     return __builtin_clzll(x);
 #elif defined(_MSC_VER) && (defined(_M_X64) || defined(_M_ARM64))
-    unsigned long index = 0;
+    unsigned long index = 0; // NOLINT(runtime/int): the type _BitScan*64 takes
     _BitScanReverse64(&index, x);
     return 63 - static_cast<int>(index);
 #else
@@ -53,7 +53,7 @@ inline int count_trailing_zeros(std::uint64_t x) noexcept
 #if defined(__GNUC__) || defined(__clang__)
     return __builtin_ctzll(x);
 #elif defined(_MSC_VER) && (defined(_M_X64) || defined(_M_ARM64))
-    unsigned long index = 0;
+    unsigned long index = 0; // NOLINT(runtime/int): the type _BitScan*64 takes
     _BitScanForward64(&index, x);
     return static_cast<int>(index);
 #else
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index 3e888b615..21eb1d95f 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -8884,7 +8884,7 @@ inline int count_leading_zeros(std::uint64_t x) noexcept
 #if defined(__GNUC__) || defined(__clang__)
     return __builtin_clzll(x);
 #elif defined(_MSC_VER) && (defined(_M_X64) || defined(_M_ARM64))
-    unsigned long index = 0;
+    unsigned long index = 0; // NOLINT(runtime/int): the type _BitScan*64 takes
     _BitScanReverse64(&index, x);
     return 63 - static_cast<int>(index);
 #else
@@ -8907,7 +8907,7 @@ inline int count_trailing_zeros(std::uint64_t x) noexcept
 #if defined(__GNUC__) || defined(__clang__)
     return __builtin_ctzll(x);
 #elif defined(_MSC_VER) && (defined(_M_X64) || defined(_M_ARM64))
-    unsigned long index = 0;
+    unsigned long index = 0; // NOLINT(runtime/int): the type _BitScan*64 takes
     _BitScanForward64(&index, x);
     return static_cast<int>(index);
 #else
diff --git a/tests/src/unit-to_chars.cpp b/tests/src/unit-to_chars.cpp
index d8eb44434..c9b72fc97 100644
--- a/tests/src/unit-to_chars.cpp
+++ b/tests/src/unit-to_chars.cpp
@@ -837,6 +837,9 @@ TEST_CASE("choice of the conversion")
     SECTION("long double with the format of a double: Zmij")
     {
         // (on platforms where long double is wider, Grisu2 does not apply either: the snprintf fallback does)
+        // (constant on a given platform)
+        DOCTEST_MSVC_SUPPRESS_WARNING_PUSH
+        DOCTEST_MSVC_SUPPRESS_WARNING(4127)
         if (std::numeric_limits<long double>::digits == 53 && std::numeric_limits<long double>::is_iec559)
         {
             using long_double_json = nlohmann::json::with_float_t<long double>;
@@ -850,5 +853,6 @@ TEST_CASE("choice of the conversion")
             }
             CHECK(long_double_json(5.3165205877497296e+16L).dump() == "5.31652058774973e+16");
         }
+        DOCTEST_MSVC_SUPPRESS_WARNING_POP
     }
 }