diff --git a/src/app/ui/timeline.cpp b/src/app/ui/timeline.cpp
index 30d266fc3..e48b1e9a6 100644
--- a/src/app/ui/timeline.cpp
+++ b/src/app/ui/timeline.cpp
@@ -1029,6 +1029,11 @@ void Timeline::onRemoveDocument(doc::Document* document)
     detachDocument();
 }
 
+void Timeline::onGeneralUpdate(DocumentEvent& ev)
+{
+  invalidate();
+}
+
 void Timeline::onAddLayer(doc::DocumentEvent& ev)
 {
   ASSERT(ev.layer() != NULL);
diff --git a/src/app/ui/timeline.h b/src/app/ui/timeline.h
index 1aaaa273c..042b8a156 100644
--- a/src/app/ui/timeline.h
+++ b/src/app/ui/timeline.h
@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2001-2015  David Capello
+// Copyright (C) 2001-2016  David Capello
 //
 // This program is free software; you can redistribute it and/or modify
 // it under the terms of the GNU General Public License version 2 as
@@ -110,6 +110,7 @@ namespace app {
     void onPaint(ui::PaintEvent& ev) override;
 
     // DocumentObserver impl.
+    void onGeneralUpdate(DocumentEvent& ev) override;
     void onAddLayer(doc::DocumentEvent& ev) override;
     void onAfterRemoveLayer(doc::DocumentEvent& ev) override;
     void onAddFrame(doc::DocumentEvent& ev) override;