diff --git a/ble-midi-repro.zip b/ble-midi-repro.zip
new file mode 100644
index 0000000..6ad27fc
Binary files /dev/null and b/ble-midi-repro.zip differ
diff --git a/src/hardware/BLEMIDI_ESP32.h b/src/hardware/BLEMIDI_ESP32.h
index 7c49560..34a6054 100644
--- a/src/hardware/BLEMIDI_ESP32.h
+++ b/src/hardware/BLEMIDI_ESP32.h
@@ -128,7 +128,7 @@ class MyCharacteristicCallbacks : public BLECharacteristicCallbacks
 };
 
 template <class _Settings>
-bool BLEMIDI_ESP32<_Settings>::begin(const char *deviceName, BLEMIDI_Transport<class BLEMIDI_ESP32<_Settings>, _Settings> *bleMidiTransport)
+inline bool BLEMIDI_ESP32<_Settings>::begin(const char *deviceName, BLEMIDI_Transport<class BLEMIDI_ESP32<_Settings>, _Settings> *bleMidiTransport)
 {
     _bleMidiTransport = bleMidiTransport;