diff --git a/src/engine/platform/sound/ymfm/README.md b/src/engine/platform/sound/ymfm/README.md
index 788b99015..40e64f19e 100644
--- a/src/engine/platform/sound/ymfm/README.md
+++ b/src/engine/platform/sound/ymfm/README.md
@@ -4,7 +4,7 @@
 
 # modified version
 
-this is a modified version of ymfm with a small bug fix.
+this is a modified version which contains many fixes.
 
 ## Supported environments