diff --git a/include/fmt/base.h b/include/fmt/base.h
index f5a45563..18c8de58 100644
--- a/include/fmt/base.h
+++ b/include/fmt/base.h
@@ -686,17 +686,6 @@ struct has_to_string_view<
     T, void_t<decltype(detail::to_string_view(std::declval<T>()))>>
     : std::true_type {};
 
-template <typename Char, Char... C> struct string_literal {
-  static constexpr Char value[sizeof...(C)] = {C...};
-  constexpr operator basic_string_view<Char>() const {
-    return {value, sizeof...(C)};
-  }
-};
-#if FMT_CPLUSPLUS < 201703L
-template <typename Char, Char... C>
-constexpr Char string_literal<Char, C...>::value[sizeof...(C)];
-#endif
-
 enum class type {
   none_type,
   // Integer types should go first,
diff --git a/include/fmt/format.h b/include/fmt/format.h
index 59ae206a..6278489a 100644
--- a/include/fmt/format.h
+++ b/include/fmt/format.h
@@ -278,6 +278,17 @@ template <typename Char> using std_string_view = std::basic_string_view<Char>;
 template <typename T> struct std_string_view {};
 #endif
 
+template <typename Char, Char... C> struct string_literal {
+  static constexpr Char value[sizeof...(C)] = {C...};
+  constexpr operator basic_string_view<Char>() const {
+    return {value, sizeof...(C)};
+  }
+};
+#if FMT_CPLUSPLUS < 201703L
+template <typename Char, Char... C>
+constexpr Char string_literal<Char, C...>::value[sizeof...(C)];
+#endif
+
 // Implementation of std::bit_cast for pre-C++20.
 template <typename To, typename From, FMT_ENABLE_IF(sizeof(To) == sizeof(From))>
 FMT_CONSTEXPR20 auto bit_cast(const From& from) -> To {