diff --git a/include/fmt/core.h b/include/fmt/core.h
index d828a190..eb80cc2f 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -1336,6 +1336,23 @@ typename std::enable_if<
   return out;
 }
 
+template <typename Container, typename... Args>
+inline typename std::enable_if<
+  is_contiguous<Container>::value, std::back_insert_iterator<Container>>::type
+    format_to(std::back_insert_iterator<Container> out,
+              string_view format_str, const Args & ... args) {
+  return vformat_to(out, format_str, make_format_args<format_context>(args...));
+}
+
+template <typename Container, typename... Args>
+inline typename std::enable_if<
+  is_contiguous<Container>::value, std::back_insert_iterator<Container>>::type
+    format_to(std::back_insert_iterator<Container> out,
+              wstring_view format_str, const Args & ... args) {
+  return vformat_to(out, format_str,
+                    make_format_args<wformat_context>(args...));
+}
+
 std::string vformat(string_view format_str, format_args args);
 std::wstring vformat(wstring_view format_str, wformat_args args);
 
diff --git a/include/fmt/format.h b/include/fmt/format.h
index fcb13a25..01eb74cb 100644
--- a/include/fmt/format.h
+++ b/include/fmt/format.h
@@ -3579,23 +3579,6 @@ inline OutputIt format_to(OutputIt out, string_view format_str,
       make_format_args<typename format_context_t<OutputIt>::type>(args...));
 }
 
-template <typename Container, typename... Args>
-inline typename std::enable_if<
-  is_contiguous<Container>::value, std::back_insert_iterator<Container>>::type
-    format_to(std::back_insert_iterator<Container> out,
-              string_view format_str, const Args & ... args) {
-  return vformat_to(out, format_str, make_format_args<format_context>(args...));
-}
-
-template <typename Container, typename... Args>
-inline typename std::enable_if<
-  is_contiguous<Container>::value, std::back_insert_iterator<Container>>::type
-    format_to(std::back_insert_iterator<Container> out,
-              wstring_view format_str, const Args & ... args) {
-  return vformat_to(out, format_str,
-                    make_format_args<wformat_context>(args...));
-}
-
 template <typename OutputIt>
 struct format_to_n_result {
   /** Iterator past the end of the output range. */