diff --git a/README.md b/README.md
index 2af5896..af5ff31 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
 # legacy
 
-Legacy code that recognized Sturnus sounds
\ No newline at end of file
+Legacy code that recognized Sturnus sounds
+
+Old sound files: https://tormakristof.eu/files/sturnus/
\ No newline at end of file