diff --git a/src/app/ui/timeline/timeline.cpp b/src/app/ui/timeline/timeline.cpp
index 3bc7ab511..77a96aad6 100644
--- a/src/app/ui/timeline/timeline.cpp
+++ b/src/app/ui/timeline/timeline.cpp
@@ -55,7 +55,6 @@
 #include "os/font.h"
 #include "os/surface.h"
 #include "os/system.h"
-#include "ui/scroll_helper.h"
 #include "ui/ui.h"
 
 #include <cstdio>
diff --git a/src/ui/scroll_helper.h b/src/ui/scroll_helper.h
index 289e17371..ac572f4eb 100644
--- a/src/ui/scroll_helper.h
+++ b/src/ui/scroll_helper.h
@@ -1,5 +1,5 @@
 // Aseprite UI Library
-// Copyright (C) 2001-2013, 2015  David Capello
+// Copyright (C) 2001-2015  David Capello
 //
 // This file is released under the terms of the MIT license.
 // Read LICENSE.txt for more information.
diff --git a/src/ui/ui.h b/src/ui/ui.h
index 6becabd82..35b218b87 100644
--- a/src/ui/ui.h
+++ b/src/ui/ui.h
@@ -1,4 +1,5 @@
 // Aseprite UI Library
+// Copyright (C) 2019  Igara Studio S.A.
 // Copyright (C) 2001-2018  David Capello
 //
 // This file is released under the terms of the MIT license.
@@ -52,6 +53,7 @@
 #include "ui/save_layout_event.h"
 #include "ui/scale.h"
 #include "ui/scroll_bar.h"
+#include "ui/scroll_helper.h"
 #include "ui/separator.h"
 #include "ui/size_hint_event.h"
 #include "ui/slider.h"