diff --git a/OpenAudio_ArduinoLibrary.h b/OpenAudio_ArduinoLibrary.h
index 5d5c9a9..7e33988 100644
--- a/OpenAudio_ArduinoLibrary.h
+++ b/OpenAudio_ArduinoLibrary.h
@@ -56,6 +56,7 @@
 #include "AudioAnalyzePhase_F32.h"
 #include "AudioFilterEqualizer_F32.h"
 #include "AudioFilterFIRGeneral_F32.h"
+#include "radioCESSBtransmit_F32.h"
 #include "RadioFMDetector_F32.h"
 #include "radioBFSKmodulator_F32.h"
 #include "radioFT8Modulator_F32.h"