diff --git a/quantum/audio/voices.c b/quantum/audio/voices.c
index 30e8be641e..51652927bd 100644
--- a/quantum/audio/voices.c
+++ b/quantum/audio/voices.c
@@ -6,55 +6,55 @@ extern float note_timbre;
 voice_type voice = default_voice;
 
 void set_voice(voice_type v) {
-	voice = v;
+    voice = v;
 }
 
 float voice_envelope(float frequency) {
-	// envelope_index ranges from 0 to 0xFFFF, which is preserved at 880.0 Hz
+    // envelope_index ranges from 0 to 0xFFFF, which is preserved at 880.0 Hz
     uint16_t compensated_index = (uint16_t)((float)envelope_index * (880.0 / frequency));
 
     switch (voice) {
-    	case default_voice:
-    		// nothing here on purpose
-    	break;
-    	case butts_fader:
-		    switch (compensated_index) {
-		        case 0 ... 9:
-		            frequency = frequency / 4;
-		            note_timbre = TIMBRE_12;
-		        break;
-		        case 10 ... 19:
-		            frequency = frequency / 2;
-		            note_timbre = TIMBRE_12;
-		        break;
-		        case 20 ... 200:
-		            note_timbre = .125 - pow(((float)compensated_index - 20) / (200 - 20), 2)*.125;
-		        break;
-		        default:
-		            note_timbre = 0;
-		        break;
-		    }
-	    break;
-    	case octave_crunch:
-		    switch (compensated_index) {
-		        case 0 ... 9:
-		        case 20 ... 24:
-		        case 30 ... 32:
-		            frequency = frequency / 2;
-		            note_timbre = TIMBRE_12;
-		        break;
-		        case 10 ... 19:
-		        case 25 ... 29:
-		        case 33 ... 35:
-		            frequency = frequency * 2;
-		            note_timbre = TIMBRE_12;
-		        break;
-		        default:
-		            note_timbre = TIMBRE_12;
-		        break;
-		    }
-	    break;
-	}
+        case default_voice:
+            // nothing here on purpose
+        break;
+        case butts_fader:
+            switch (compensated_index) {
+                case 0 ... 9:
+                    frequency = frequency / 4;
+                    note_timbre = TIMBRE_12;
+                break;
+                case 10 ... 19:
+                    frequency = frequency / 2;
+                    note_timbre = TIMBRE_12;
+                break;
+                case 20 ... 200:
+                    note_timbre = .125 - pow(((float)compensated_index - 20) / (200 - 20), 2)*.125;
+                break;
+                default:
+                    note_timbre = 0;
+                break;
+            }
+        break;
+        case octave_crunch:
+            switch (compensated_index) {
+                case 0 ... 9:
+                case 20 ... 24:
+                case 30 ... 32:
+                    frequency = frequency / 2;
+                    note_timbre = TIMBRE_12;
+                break;
+                case 10 ... 19:
+                case 25 ... 29:
+                case 33 ... 35:
+                    frequency = frequency * 2;
+                    note_timbre = TIMBRE_12;
+                break;
+                default:
+                    note_timbre = TIMBRE_12;
+                break;
+            }
+        break;
+    }
 
-	return frequency;
+    return frequency;
 }
\ No newline at end of file
diff --git a/quantum/audio/voices.h b/quantum/audio/voices.h
index 32135dac7f..317f5d98c5 100644
--- a/quantum/audio/voices.h
+++ b/quantum/audio/voices.h
@@ -11,9 +11,9 @@
 float voice_envelope(float frequency);
 
 typedef enum {
-	default_voice,
-	butts_fader,
-	octave_crunch
+    default_voice,
+    butts_fader,
+    octave_crunch
 } voice_type;
 
 void set_voice(voice_type v);