diff --git a/src/sandbox/layers/test_panel/test_panel.hpp b/src/sandbox/layers/test_panel/test_panel.hpp
index c0e56c0..33081b7 100644
--- a/src/sandbox/layers/test_panel/test_panel.hpp
+++ b/src/sandbox/layers/test_panel/test_panel.hpp
@@ -6,8 +6,6 @@ namespace tr::layers
 {
   class test_panel : public try_engine::layer
   {
-    using font_type = try_engine::style::fonts::font_type;
-
     BASE_TYPE_DEFINE();
 
     public:
diff --git a/src/try_engine/utils/define.hpp b/src/try_engine/utils/define.hpp
index 7dc9a12..db2bc85 100644
--- a/src/try_engine/utils/define.hpp
+++ b/src/try_engine/utils/define.hpp
@@ -10,6 +10,7 @@
   std::bind(&app::x, this, std::placeholders::_1)
 
 #define BASE_TYPE_DEFINE()\
+  using font_type = try_engine::style::fonts::font_type;\
   using time = try_engine::time::timestep<float>;\
   using event_manager = try_engine::app_event::event;\
   using system_event = try_engine::system_event::event