diff --git a/src/main/java/com/yes/yes/behaviours/ItemBehaviour.java b/src/main/java/com/yes/yes/behaviours/ItemBehaviour.java
index 156c0a0..aecd826 100644
--- a/src/main/java/com/yes/yes/behaviours/ItemBehaviour.java
+++ b/src/main/java/com/yes/yes/behaviours/ItemBehaviour.java
@@ -12,7 +12,7 @@ import javafx.scene.transform.Scale;
 public class ItemBehaviour extends Component {
 
     private VBox itemGroup;
-    private String dataKey;
+    private final String dataKey;
 
     public ItemBehaviour(Entity entity, BlockContainer blockContainer, String dataKey) {
         super(entity, blockContainer);