diff --git a/sound-driver/melody_pling.c b/sound-driver/melody_pling.c
index 9696eed..05c3722 100644
--- a/sound-driver/melody_pling.c
+++ b/sound-driver/melody_pling.c
@@ -27,7 +27,7 @@ t_melodies pling = {
 };
 
 void playPling() {
-  pling.amplitude = configGetEffectsAmplitudePtr();
+  pling.p_amplitude = configGetEffectsAmplitudePtr();
   sequencerPlayMelodies(&pling);
 }
 
diff --git a/sound-driver/melody_tetris.c b/sound-driver/melody_tetris.c
index 046ed6e..a1d9102 100644
--- a/sound-driver/melody_tetris.c
+++ b/sound-driver/melody_tetris.c
@@ -933,7 +933,7 @@ t_melodies tetrisTheme = {
 
 void playMelodyTetris() {
   tetrisTheme.pace = INITIAL_PACE; // reset to start value each time
-  tetrisTheme.amplitude = configGetMelodyAmplitudePtr();
+  tetrisTheme.p_amplitude = configGetMelodyAmplitudePtr();
   sequencerPlayMelodies(&tetrisTheme);
 }
 
diff --git a/sound-driver/melody_tusch1.c b/sound-driver/melody_tusch1.c
index dec0a88..bf192d3 100644
--- a/sound-driver/melody_tusch1.c
+++ b/sound-driver/melody_tusch1.c
@@ -79,7 +79,7 @@ t_melodies tusch1 = {
 };
 
 void playTusch1() {
-  tusch1.amplitude = configGetEffectsAmplitudePtr();
+  tusch1.p_amplitude = configGetEffectsAmplitudePtr();
   sequencerPlayMelodies(&tusch1);
 }
 
diff --git a/sound-driver/sequencer.c b/sound-driver/sequencer.c
index 7c29daf..683e33c 100644
--- a/sound-driver/sequencer.c
+++ b/sound-driver/sequencer.c
@@ -59,7 +59,7 @@ void sequencerExec(void *handle) {
           if (melody->tones[melody->idx].length == e_L_EndMark) {
             melody->idx = 0;
           }
-          psgPlayTone(melodies->chip, channel, *(melodies->amplitude), melody->tones[melody->idx].octave, melody->tones[melody->idx].note);
+          psgPlayTone(melodies->chip, channel, *(melodies->p_amplitude), melody->tones[melody->idx].octave, melody->tones[melody->idx].note);
           melody->lengthCnt = (melody->tones[melody->idx].staccato) ? 
             (calcLength(melodies, melody->tones[melody->idx].length) / 2) : 
             calcLength(melodies, melody->tones[melody->idx].length);
diff --git a/sound-driver/sequencer.h b/sound-driver/sequencer.h
index 58acb75..1bff754 100644
--- a/sound-driver/sequencer.h
+++ b/sound-driver/sequencer.h
@@ -52,7 +52,7 @@ typedef struct {
 typedef struct {
   uint8_t slotMask;
   uint8_t chip;
-  uint8_t *amplitude;
+  uint8_t *p_amplitude;
   uint8_t taskId;
   uint16_t quarterLength;
   uint8_t numOfMelodies;