diff --git a/src/ui/CSimpleCheckbox.cpp b/src/ui/CSimpleCheckbox.cpp
index 64b455d..d56dc9b 100644
--- a/src/ui/CSimpleCheckbox.cpp
+++ b/src/ui/CSimpleCheckbox.cpp
@@ -23,10 +23,6 @@ void CSimpleCheckbox::RegisterScriptMethods(lua_State* L) {
     FrameScript_Object::FillScriptMethodTable(L, SimpleCheckboxMethods, NUM_SIMPLE_CHECKBOX_SCRIPT_METHODS);
 }
 
-CSimpleCheckbox::CSimpleCheckbox(CSimpleFrame* parent) : CSimpleButton(parent) {
-    // TODO
-}
-
 int32_t CSimpleCheckbox::GetScriptMetaTable() {
     return CSimpleCheckbox::s_metatable;
 }
diff --git a/src/ui/CSimpleCheckbox.hpp b/src/ui/CSimpleCheckbox.hpp
index 3435844..28e1ce6 100644
--- a/src/ui/CSimpleCheckbox.hpp
+++ b/src/ui/CSimpleCheckbox.hpp
@@ -15,13 +15,17 @@ class CSimpleCheckbox : public CSimpleButton {
         static void RegisterScriptMethods(lua_State* L);
 
         // Member variables
+        int32_t m_checked = 0;
+        CSimpleTexture* m_checkedTexture = nullptr;
+        CSimpleTexture* m_disabledTexture = nullptr;
 
         // Virtual member functions
         virtual bool IsA(int32_t type);
         virtual int32_t GetScriptMetaTable();
 
         // Member functions
-        CSimpleCheckbox(CSimpleFrame* parent);
+        CSimpleCheckbox(CSimpleFrame* parent)
+            : CSimpleButton(parent) {};
 };
 
 #endif