diff --git a/include/libremidi/backends/alsa_raw/midi_in.hpp b/include/libremidi/backends/alsa_raw/midi_in.hpp
index d5f5a65..fda1b36 100644
--- a/include/libremidi/backends/alsa_raw/midi_in.hpp
+++ b/include/libremidi/backends/alsa_raw/midi_in.hpp
@@ -144,7 +144,8 @@ class midi_in_impl
     while ((err = snd.rawmidi.read(this->midiport_, bytes, nbytes)) > 0)
     {
       const auto to_ns = [this] { return absolute_timestamp(); };
-      decoder_.on_bytes({bytes, bytes + err}, decoder_.timestamp<timestamp_info>(to_ns, 0));
+      m_processing.on_bytes(
+          {bytes, bytes + err}, m_processing.timestamp<timestamp_info>(to_ns, 0));
     }
     return err;
   }
@@ -169,7 +170,8 @@ class midi_in_impl
       const auto to_ns = [ts] {
         return static_cast<int64_t>(ts.tv_sec) * 1'000'000'000 + static_cast<int64_t>(ts.tv_nsec);
       };
-      decoder_.on_bytes({bytes, bytes + err}, decoder_.timestamp<timestamp_info>(to_ns, 0));
+      m_processing.on_bytes(
+          {bytes, bytes + err}, m_processing.timestamp<timestamp_info>(to_ns, 0));
     }
     return err;
   }
@@ -189,7 +191,7 @@ class midi_in_impl
 
   snd_rawmidi_t* midiport_{};
   std::vector<pollfd> fds_;
-  midi1::input_state_machine decoder_{this->configuration};
+  midi1::input_state_machine m_processing{this->configuration};
 };
 
 class midi_in_alsa_raw_threaded : public midi_in_impl
diff --git a/include/libremidi/backends/winmm/midi_in.hpp b/include/libremidi/backends/winmm/midi_in.hpp
index e482218..f04d57e 100644
--- a/include/libremidi/backends/winmm/midi_in.hpp
+++ b/include/libremidi/backends/winmm/midi_in.hpp
@@ -240,8 +240,7 @@ class midi_in_winmm final
       const auto* sysex = reinterpret_cast<MIDIHDR*>(midiMessage);
       if(inputStatus == MIM_LONGERROR)
       {
-        self.m_processing.message.bytes.clear();
-        self.m_processing.state = self.m_processing.main;
+        self.m_processing.reset();
       }
       else if (!self.configuration.ignore_sysex)
       {
diff --git a/include/libremidi/detail/midi_stream_decoder.hpp b/include/libremidi/detail/midi_stream_decoder.hpp
index 1772729..b69fc6b 100644
--- a/include/libremidi/detail/midi_stream_decoder.hpp
+++ b/include/libremidi/detail/midi_stream_decoder.hpp
@@ -102,6 +102,14 @@ namespace midi1
 struct input_state_machine : input_state_machine_base<input_configuration>
 {
   using input_state_machine_base::input_state_machine_base;
+
+  void reset()
+  {
+    message.bytes.clear();
+    message.timestamp = {};
+    state = main;
+  }
+
   bool has_finished_sysex(std::span<const uint8_t> bytes) const noexcept
   {
     return (((bytes.front() == 0xF0) || (state == in_sysex)) && (bytes.back() == 0xF7));