diff --git a/LuaEngine.h b/LuaEngine.h
index 6213ad4..2acbe30 100644
--- a/LuaEngine.h
+++ b/LuaEngine.h
@@ -30,6 +30,7 @@ extern "C"
 #endif
 #include "Group.h"
 #include "Item.h"
+#include "Opcodes.h"
 #include "Weather.h"
 #include "World.h"