diff --git a/doc/8-advanced/piano.md b/doc/8-advanced/piano.md
index b437a9820..302177e0a 100644
--- a/doc/8-advanced/piano.md
+++ b/doc/8-advanced/piano.md
@@ -11,7 +11,7 @@ the buttons at the left do the following:
 | move one octave down | move one octave up | open options |
 | fewer visible octaves | more visible octaves | swap buttons |
 
-when swapped, the bottons do the following:
+when swapped, the buttons do the following:
 
 |  |  |  |
 | :---: | :---: | :---: |
@@ -30,4 +30,4 @@ key layout:
 - **Continuous**: black keys are full length.
 
 **Share play/edit offset/range**: if disabled, the piano will keep different octave and range values for playback and non-playback states.
-**Read-only (can't input notes): prevents note entry.
\ No newline at end of file
+**Read-only (can't input notes): prevents note entry.