diff --git a/libui/include/ui/Action.h b/libos/include/os/Action.h
similarity index 87%
rename from libui/include/ui/Action.h
rename to libos/include/os/Action.h
index 4955ffd4..f49e100b 100644
--- a/libui/include/ui/Action.h
+++ b/libos/include/os/Action.h
@@ -1,7 +1,16 @@
+/**
+ * @file Action.h
+ * @author apio (cloudapio.eu)
+ * @brief Wrapper for callable objects, like function pointers or lambdas.
+ *
+ * @copyright Copyright (c) 2023, the Luna authors.
+ *
+ */
+
 #pragma once
 #include <luna/Heap.h>
 
-namespace ui
+namespace os
 {
     class Action
     {
diff --git a/libui/include/ui/Button.h b/libui/include/ui/Button.h
index a73df5df..38d5f512 100644
--- a/libui/include/ui/Button.h
+++ b/libui/include/ui/Button.h
@@ -8,7 +8,7 @@
  */
 
 #pragma once
-#include <ui/Action.h>
+#include <os/Action.h>
 #include <ui/Widget.h>
 
 namespace ui
@@ -19,7 +19,7 @@ namespace ui
         Button(Rect rect);
 
         void set_widget(Widget& widget);
-        void set_action(Action&& action);
+        void set_action(os::Action&& action);
 
         Result<EventResult> handle_mouse_move(Point position) override;
         Result<EventResult> handle_mouse_leave() override;
@@ -32,6 +32,6 @@ namespace ui
         bool m_hovered { false };
         bool m_clicked { false };
         Widget* m_child;
-        Action m_action;
+        os::Action m_action;
     };
 }
diff --git a/libui/src/Button.cpp b/libui/src/Button.cpp
index ab412cb1..14e5ceb1 100644
--- a/libui/src/Button.cpp
+++ b/libui/src/Button.cpp
@@ -24,7 +24,7 @@ namespace ui
         widget.set_parent(this);
     }
 
-    void Button::set_action(Action&& action)
+    void Button::set_action(os::Action&& action)
     {
         m_action = move(action);
     }