diff --git a/src/MixerBoard.cpp b/src/MixerBoard.cpp
index 6eecfd1c4..91291a447 100644
--- a/src/MixerBoard.cpp
+++ b/src/MixerBoard.cpp
@@ -1372,6 +1372,7 @@ void MixerBoard::OnTrackSetChanged(wxEvent &evt)
 {
    evt.Skip();
    mUpToDate = false;
+   UpdateTrackClusters();
    Refresh();
 }