diff --git a/keywords.txt b/keywords.txt
index de3c08a..86e5975 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -2,36 +2,36 @@
 OpenAudio_ArduinoLibrary	KEYWORD1
 
 #data type / class / static function names
-float32_t		KEYWORD1
+float32_t	KEYWORD1
 audio_block_f32_t	KEYWORD1
-AudioStream_F32		KEYWORD1
+AudioStream_F32	KEYWORD1
 AudioConnection_F32	KEYWORD1
 
 AudioControlTLV320AIC3206	KEYWORD1
-inputSelect		KEYWORD2
-setMicBias		KEYWORD2
-volume			KEYWORD2
-volume_dB		KEYWORD2
-setInputGain_dB		KEYWORD2
+inputSelect	KEYWORD2
+setMicBias	KEYWORD2
+volume	KEYWORD2
+volume_dB	KEYWORD2
+setInputGain_dB	KEYWORD2
 
 AudioControlSGTL5000_Extended	KEYWORD1
-micBiasEnable		KEYWORD2
+micBiasEnable	KEYWORD2
 
 AudioConvert_I16toF32	KEYWORD1
 AudioConvert_F32toI16	KEYWORD1
 
 AudioEffectGain_F32	KEYWORD1
-setGain_dB		KEYWORD2
+setGain_dB	KEYWORD2
 
 AudioFilterFIR_F32	KEYWORD1
 AudioEffectIIR_F32	KEYWORD1
 AudioEffectCompressor_F32	KEYWORD1
 AudioInputI2S_F32	KEYWORD1
-AudioMemory_F32		KEYWORD1
+AudioMemory_F32	KEYWORD1
 AudioMemoryUsage_F32	KEYWORD1
 AudioMemoryUsageMax_F32	KEYWORD1
 AudioMemoryUsageMaxReset_F32	KEYWORD1
-AudioMixer4_F32		KEYWORD1
+AudioMixer4_F32	KEYWORD1
 AudioMultiply_F32	KEYWORD1
 AudioOutputI2S_F32	KEYWORD1
 AudioPlayQueue_F32	KEYWORD1
@@ -42,8 +42,8 @@ AudioSynthWaveform_F32	KEYWORD1
 
 
 AudioSynthWaveformSine_F32	KEYWORD1
-frequency		KEYWORD2
-phase			KEYWORD2
-amplitude		KEYWORD2
+frequency	KEYWORD2
+phase	KEYWORD2
+amplitude	KEYWORD2