diff --git a/example/layers/ui_layer/ui_layer.hpp b/example/layers/ui_layer/ui_layer.hpp
index 616b585..b08b20e 100755
--- a/example/layers/ui_layer/ui_layer.hpp
+++ b/example/layers/ui_layer/ui_layer.hpp
@@ -7,7 +7,7 @@ namespace example
   class ui_layer : public VE::layer, public VE::flags, public VE::connector
   {
     VE_OVERIDE();
-    void on_event(VE::event& e) override;
+    VE_EVENT_OVERIDE();
 
     ImVec2 m_size = ImVec2{ 400.f, 400.f };
     ImVec2 m_pos = ImVec2{ 400.f, 400.f };
diff --git a/example/layers/ui_layer_double/ui_layer_double.hpp b/example/layers/ui_layer_double/ui_layer_double.hpp
index 8718f2d..2be5318 100755
--- a/example/layers/ui_layer_double/ui_layer_double.hpp
+++ b/example/layers/ui_layer_double/ui_layer_double.hpp
@@ -7,7 +7,7 @@ namespace example
   class ui_layer_double : public VE::layer, public VE::flags, public VE::connector
   {
     VE_OVERIDE();
-    void on_event(VE::event& e) override;
+    VE_EVENT_OVERIDE();
 
     ImVec2 m_size = ImVec2{ 400.f, 400.f };
     ImVec2 m_pos = ImVec2{ 400.f, 400.f };
diff --git a/src/vertex_engine/utils/define.hpp b/src/vertex_engine/utils/define.hpp
index 9ea4f3a..fb8c65f 100755
--- a/src/vertex_engine/utils/define.hpp
+++ b/src/vertex_engine/utils/define.hpp
@@ -3,6 +3,9 @@
 #define BIT(x)\
   (1 << x)
 
+#define VE_EVENT_OVERIDE()\
+  void on_event(VE::event& e) override
+
 #define VE_OVERIDE()\
   public:\
     void on_attach() override;\