diff --git a/src/common/runtime.h b/src/common/runtime.h
index 08c6080bf..308672b38 100644
--- a/src/common/runtime.h
+++ b/src/common/runtime.h
@@ -514,7 +514,7 @@ T *luax_optmodule(lua_State *L, love::Type &type)
  * @param type The type of the object.
  **/
 template <typename T>
-T *luax_totype(lua_State *L, int idx, love::Type /*type*/)
+T *luax_totype(lua_State *L, int idx, love::Type& /*type*/)
 {
 	T *o = (T *)(((Proxy *)lua_touserdata(L, idx))->object);
 
diff --git a/src/common/types.h b/src/common/types.h
index 6dc368646..33429cad2 100644
--- a/src/common/types.h
+++ b/src/common/types.h
@@ -39,6 +39,7 @@ public:
 
 	// TODO: Type-checking templated constructor
 	Type(Type *parent);
+	Type(const Type&) = delete;
 
 	uint32_t getId();
 	bool isa(const uint32_t &other);