diff --git a/src/settings.cpp b/src/settings.cpp
index 6bb618e..08f83da 100644
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -18,8 +18,7 @@
 
 #include "settings.hpp"
 
-fmt::appender
-fmt::formatter<rtpmididns::settings_t::alsa_announce_t>::format(
+fmt::appender fmt::formatter<rtpmididns::settings_t::alsa_announce_t>::format(
     const rtpmididns::settings_t::alsa_announce_t &data, format_context &ctx) {
 
   return fmt::format_to(ctx.out(), "[alsa_announce_t {}]", data.name);
@@ -80,6 +79,7 @@ fmt::formatter<std::vector<rtpmididns::settings_t::connect_to_t>>::format(
 
 fmt::appender fmt::formatter<rtpmididns::settings_t>::format(
     const rtpmididns::settings_t &data, format_context &ctx) {
+#if FMT_VERSION > 90000
   return fmt::format_to(ctx.out(),
                         "[settings_t: alsa_name: {}, alsa_network: {}, "
                         "control_filename: {}, rtpmidi_announces: {}, "
@@ -89,6 +89,9 @@ fmt::appender fmt::formatter<rtpmididns::settings_t>::format(
                         data.control_filename, data.rtpmidi_announces,
                         data.alsa_announces, data.connect_to,
                         data.alsa_hw_auto_export);
+#else
+  return fmt::format_to(ctx.out(), "[settings_t]");
+#endif
 }
 
 fmt::appender