diff --git a/include/fmt/base.h b/include/fmt/base.h
index b9df9cdca3cd8..7cb3137c8ba0a 100644
--- a/include/fmt/base.h
+++ b/include/fmt/base.h
@@ -1087,7 +1087,11 @@ template <typename T> class basic_appender {
   }
 
  public:
+  using iterator_category = void;
+  using value_type = T;
   using difference_type = ptrdiff_t;
+  using pointer = T*;
+  using reference = T&;
   FMT_UNCHECKED_ITERATOR(basic_appender);
 
   FMT_CONSTEXPR basic_appender(detail::buffer<T>& buf) : buffer_(&buf) {}
diff --git a/include/fmt/format.h b/include/fmt/format.h
index b6c5a1b820d21..f380d563a524b 100644
--- a/include/fmt/format.h
+++ b/include/fmt/format.h
@@ -271,13 +271,6 @@ inline auto ctzll(uint64_t x) -> int {
 FMT_END_NAMESPACE
 #endif
 
-namespace std {
-template <typename T> struct iterator_traits<fmt::basic_appender<T>> {
-  using value_type = void;
-  using iterator_category = std::output_iterator_tag;
-};
-}  // namespace std
-
 FMT_BEGIN_NAMESPACE
 
 template <typename Char, typename Traits, typename Allocator>