diff --git a/tone-generator.ino b/tone-generator.ino
index 1423143..4b52e93 100644
--- a/tone-generator.ino
+++ b/tone-generator.ino
@@ -36,6 +36,7 @@ void loop() {
   } else {
     if(data::check()) {
       scheduler::do_next();
+      tones::recalc();
     }
   }