diff --git a/gui/libui/include/ui/InputField.h b/gui/libui/include/ui/InputField.h
index 8d3f3052..ef09cf74 100644
--- a/gui/libui/include/ui/InputField.h
+++ b/gui/libui/include/ui/InputField.h
@@ -14,7 +14,7 @@
 
 namespace ui
 {
-    class InputField : public ui::TextInput
+    class InputField final : public ui::TextInput
     {
       public:
         InputField(SharedPtr<ui::Font> font);