diff --git a/Library/include/playrho/detail/Checked.hpp b/Library/include/playrho/detail/Checked.hpp
index 857676384b..93c8fca2d4 100644
--- a/Library/include/playrho/detail/Checked.hpp
+++ b/Library/include/playrho/detail/Checked.hpp
@@ -194,7 +194,7 @@ class Checked
     std::enable_if_t<std::is_constructible_v<ValueType, U&&> && !IsChecked<std::decay_t<U>>::value,
     int> = 0>
     constexpr Checked(U&& value) noexcept(NoExcept):
-        m_value{Validate(std::forward<U>(value))}
+        m_value{Validate(ValueType(std::forward<U>(value)))}
     {
         // Intentionally empty.
     }
@@ -207,7 +207,7 @@ class Checked
     std::enable_if_t<
     std::is_constructible_v<ValueType, OtherValueType> && !std::is_same_v<Checker, OtherChecker>,
     int> = 0>
-    constexpr Checked(const Checked<OtherValueType, OtherChecker, OtherNoExcept>& other) noexcept:
+    constexpr Checked(const Checked<OtherValueType, OtherChecker, OtherNoExcept>& other) noexcept(NoExcept):
         m_value{Validate(other.get())}
     {
         // Intentionally empty.
diff --git a/Library/include/playrho/detail/CheckedMath.hpp b/Library/include/playrho/detail/CheckedMath.hpp
index 28c6284d71..47ba79e9bd 100644
--- a/Library/include/playrho/detail/CheckedMath.hpp
+++ b/Library/include/playrho/detail/CheckedMath.hpp
@@ -50,7 +50,7 @@ auto abs(const Checked<ValueType, Checker, NoExcept>& arg)
 /// @see https://en.cppreference.com/w/cpp/numeric/math/nextafter
 template <class ValueType, class Checker, bool NoExcept>
 auto nextafter(const Checked<ValueType, Checker, NoExcept>& from, // force newline
-               const Checked<ValueType, Checker, NoExcept>& to) noexcept
+               const Checked<ValueType, Checker, NoExcept>& to)
 -> decltype(Checked<ValueType, Checker, false>(nextafter(from.get(), to.get())))
 {
     using std::nextafter;