diff --git a/LuaEngine.h b/LuaEngine.h
index 0aefdb8..1989002 100644
--- a/LuaEngine.h
+++ b/LuaEngine.h
@@ -246,7 +246,7 @@ public:
         {
             if (error)
             {
-                std::string errmsg(ElunaTemplate<Unit>::tname);
+                std::string errmsg(ElunaTemplate<T>::tname);
                 errmsg += " expected";
                 luaL_argerror(L, narg, errmsg.c_str());
             }