diff --git a/src/Sound/Tidal/Chords.hs b/src/Sound/Tidal/Chords.hs
index fec6c5870..d3c162a30 100644
--- a/src/Sound/Tidal/Chords.hs
+++ b/src/Sound/Tidal/Chords.hs
@@ -86,7 +86,7 @@ minor7sharp5 = [0,3,8,10]
 minor7flat9 :: Num a => [a]
 minor7flat9 = [0,3,7,10,13]
 minor7sharp9 :: Num a => [a]
-minor7sharp9 = [0,3,7,10,14]
+minor7sharp9 = [0,3,7,10,15]
 diminished7 :: Num a => [a]
 diminished7 = [0,3,6,9]
 minor9 :: Num a => [a]