diff --git a/src/main/java/com/songoda/skyblock/levelling/IslandLevelManager.java b/src/main/java/com/songoda/skyblock/levelling/IslandLevelManager.java
index ba5b2d42..695621b8 100644
--- a/src/main/java/com/songoda/skyblock/levelling/IslandLevelManager.java
+++ b/src/main/java/com/songoda/skyblock/levelling/IslandLevelManager.java
@@ -30,11 +30,10 @@ import java.util.*;
 import java.util.Map.Entry;
 
 public final class IslandLevelManager {
-
-    private final static int VERSION = NMSUtil.getVersionNumber();
-    private Map<Island, IslandScan> inScan;
-    private Map<CompatibleMaterial, Long> worth;
-    private Map<CompatibleMaterial, AmountMaterialPair> cachedPairs;
+    
+    private final Map<Island, IslandScan> inScan;
+    private final Map<CompatibleMaterial, Long> worth;
+    private final Map<CompatibleMaterial, AmountMaterialPair> cachedPairs;
     private final SkyBlock plugin;
 
     public IslandLevelManager(SkyBlock plugin) {
diff --git a/src/main/java/com/songoda/skyblock/placeholder/Placeholder.java b/src/main/java/com/songoda/skyblock/placeholder/Placeholder.java
index 98cc0359..068d748f 100644
--- a/src/main/java/com/songoda/skyblock/placeholder/Placeholder.java
+++ b/src/main/java/com/songoda/skyblock/placeholder/Placeholder.java
@@ -2,8 +2,8 @@ package com.songoda.skyblock.placeholder;
 
 public class Placeholder {
 
-    private String placeholder;
-    private String result;
+    private final String placeholder;
+    private final String result;
 
     public Placeholder(String placeholder, String result) {
         this.placeholder = placeholder;