diff --git a/include/fmt/core.h b/include/fmt/core.h
index 231c0e98..02a389fa 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -437,8 +437,8 @@ template <typename S> struct char_t_impl<S, enable_if_t<is_string<S>::value>> {
 };
 
 struct error_handler {
-  FMT_CONSTEXPR error_handler() {}
-  FMT_CONSTEXPR error_handler(const error_handler&) {}
+  FMT_CONSTEXPR error_handler() = default;
+  FMT_CONSTEXPR error_handler(const error_handler&) = default;
 
   // This function is intentionally not constexpr to give a compile-time error.
   FMT_NORETURN FMT_API void on_error(const char* message);
@@ -580,7 +580,7 @@ template <typename T> class buffer {
 
   buffer(const buffer&) = delete;
   void operator=(const buffer&) = delete;
-  virtual ~buffer() {}
+  virtual ~buffer() = default;
 
   T* begin() FMT_NOEXCEPT { return ptr_; }
   T* end() FMT_NOEXCEPT { return ptr_ + size_; }
diff --git a/include/fmt/format-inl.h b/include/fmt/format-inl.h
index 22b7c82d..a231ab1d 100644
--- a/include/fmt/format-inl.h
+++ b/include/fmt/format-inl.h
@@ -232,8 +232,8 @@ FMT_FUNC Char internal::decimal_point_impl(locale_ref) {
 }
 #endif
 
-FMT_API FMT_FUNC format_error::~format_error() FMT_NOEXCEPT {}
-FMT_API FMT_FUNC system_error::~system_error() FMT_NOEXCEPT {}
+FMT_API FMT_FUNC format_error::~format_error() FMT_NOEXCEPT = default;
+FMT_API FMT_FUNC system_error::~system_error() FMT_NOEXCEPT = default;
 
 FMT_FUNC void system_error::init(int err_code, string_view format_str,
                                  format_args args) {
diff --git a/include/fmt/format.h b/include/fmt/format.h
index 0c14ebda..332b8271 100644
--- a/include/fmt/format.h
+++ b/include/fmt/format.h
@@ -3030,7 +3030,7 @@ template <typename T, typename Char>
 struct formatter<T, Char,
                  enable_if_t<internal::type_constant<T, Char>::value !=
                              internal::custom_type>> {
-  FMT_CONSTEXPR formatter() {}
+  FMT_CONSTEXPR formatter() = default;
 
   // Parses format specifiers stopping either at the end of the range or at the
   // terminating '}'.