1 files changed, 6 insertions, 6 deletions
diff --git a/fretboard.mjs b/fretboard.mjs
index 4254d3a..4f5344e 100644
--- a/fretboard.mjs
+++ b/fretboard.mjs
@@ -12,17 +12,17 @@ const strings = {
 
 // true if not a natural note
 function isAccidental(note) {
-    return note[1] === '#' || note[1] === 'b';
+    return note[1] === '♯' || note[1] === '♭';
 }
 
-// convert ‘Eb’ to ‘D#’ and vice versa.
+// convert ‘E♭’ to ‘D♯’ and vice versa.
 function alternateAccidental(note) {
     const root = chromaticScale.indexOf(note[0]);
     switch (note[1]) {
-    case '#':
-        return `${chromaticScale[root+2]}b`;
-    case 'b':
-        return `${chromaticScale[root-1]}#`;
+    case '♯':
+        return `${chromaticScale[root+2]}♭`;
+    case '♭':
+        return `${chromaticScale[root-1]}♯`;
     default:
         return note;
     }