diff --git a/src/main/java/de/hdg/keklist/KeklistMetrics.java b/src/main/java/de/hdg/keklist/KeklistMetrics.java
index 10f2c96..ac2ed4c 100644
--- a/src/main/java/de/hdg/keklist/KeklistMetrics.java
+++ b/src/main/java/de/hdg/keklist/KeklistMetrics.java
@@ -23,17 +23,11 @@ public void shutdown() {
     }
 
     private void initChars() {
-        metrics.addCustomChart(new SimplePie("keklist_language", () -> {
-            return Keklist.getTranslations().getLanguageCode();
-        }));
+        metrics.addCustomChart(new SimplePie("keklist_language", () -> Keklist.getTranslations().getLanguageCode()));
 
-        metrics.addCustomChart(new SimplePie("keklist_whitelist", () -> {
-            return plugin.getConfig().getBoolean("whitelist.enabled") ? "enabled" : "disabled";
-        }));
+        metrics.addCustomChart(new SimplePie("keklist_whitelist", () -> plugin.getConfig().getBoolean("whitelist.enabled") ? "enabled" : "disabled"));
 
-        metrics.addCustomChart(new SimplePie("keklist_blacklist", () -> {
-            return plugin.getConfig().getBoolean("blacklist.enabled") ? "enabled" : "disabled";
-        }));
+        metrics.addCustomChart(new SimplePie("keklist_blacklist", () -> plugin.getConfig().getBoolean("blacklist.enabled") ? "enabled" : "disabled"));
 
         metrics.addCustomChart(new SingleLineChart("keklist_whitelisted", () -> {
             ResultSet rsPlayers = Keklist.getDatabase().onQuery("SELECT COUNT(*) FROM whitelist");
diff --git a/src/main/java/de/hdg/keklist/api/events/whitelist/PlayerRemovedFromWhitelistEvent.java b/src/main/java/de/hdg/keklist/api/events/whitelist/PlayerRemovedFromWhitelistEvent.java
index bbfe3ef..0190b31 100644
--- a/src/main/java/de/hdg/keklist/api/events/whitelist/PlayerRemovedFromWhitelistEvent.java
+++ b/src/main/java/de/hdg/keklist/api/events/whitelist/PlayerRemovedFromWhitelistEvent.java
@@ -1,7 +1,6 @@
 package de.hdg.keklist.api.events.whitelist;
 
 import de.hdg.keklist.api.KeklistAPI;
-import org.bukkit.Bukkit;
 import org.bukkit.event.Event;
 import org.bukkit.event.HandlerList;
 import org.jetbrains.annotations.NotNull;
diff --git a/src/main/java/de/hdg/keklist/api/events/whitelist/UUIDAddToWhitelistEvent.java b/src/main/java/de/hdg/keklist/api/events/whitelist/UUIDAddToWhitelistEvent.java
index 419a018..7885449 100644
--- a/src/main/java/de/hdg/keklist/api/events/whitelist/UUIDAddToWhitelistEvent.java
+++ b/src/main/java/de/hdg/keklist/api/events/whitelist/UUIDAddToWhitelistEvent.java
@@ -1,7 +1,6 @@
 package de.hdg.keklist.api.events.whitelist;
 
 import de.hdg.keklist.Keklist;
-import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.event.Event;
 import org.bukkit.event.HandlerList;
diff --git a/src/main/java/de/hdg/keklist/commands/BlacklistCommand.java b/src/main/java/de/hdg/keklist/commands/BlacklistCommand.java
index e2f45c5..ae3d549 100644
--- a/src/main/java/de/hdg/keklist/commands/BlacklistCommand.java
+++ b/src/main/java/de/hdg/keklist/commands/BlacklistCommand.java
@@ -89,7 +89,7 @@ public boolean execute(@NotNull CommandSender sender, @NotNull String commandLab
 
                     if (type.equals(BlacklistType.JAVA)) {
                         Request request = new Request.Builder().url("https://api.mojang.com/users/profiles/minecraft/" + args[1]).build();
-                        client.newCall(request).enqueue(new UserBlacklistAddCallback((sender instanceof Player) ? (Player) sender : null, reason));
+                        client.newCall(request).enqueue(new UserBlacklistAddCallback((sender instanceof Player) ? sender : null, reason));
                     } else if (type.equals(BlacklistType.IPv4) || type.equals(BlacklistType.IPv6)) {
                         ResultSet rs = Keklist.getDatabase().onQuery("SELECT * FROM blacklistIp WHERE ip = ?", args[1]);
 
diff --git a/src/main/java/de/hdg/keklist/extentions/PlanHook.java b/src/main/java/de/hdg/keklist/extentions/PlanHook.java
index 68b643c..5b0245b 100644
--- a/src/main/java/de/hdg/keklist/extentions/PlanHook.java
+++ b/src/main/java/de/hdg/keklist/extentions/PlanHook.java
@@ -9,9 +9,10 @@
 
 import java.util.Optional;
 
+@Getter
 public class PlanHook {
 
-    private @Getter Optional<Caller> caller;
+    private Optional<Caller> caller;
 
     public PlanHook() {
 
diff --git a/src/main/java/de/hdg/keklist/gui/events/blacklist/BlacklistEntryEvent.java b/src/main/java/de/hdg/keklist/gui/events/blacklist/BlacklistEntryEvent.java
index 2ec7d22..de186e8 100644
--- a/src/main/java/de/hdg/keklist/gui/events/blacklist/BlacklistEntryEvent.java
+++ b/src/main/java/de/hdg/keklist/gui/events/blacklist/BlacklistEntryEvent.java
@@ -71,7 +71,7 @@ public void onEntryClick(InventoryClickEvent event) {
                                 meta.lore(List.of(
                                         Keklist.getInstance().getMiniMessage().deserialize(translations.get("gui.blacklist.entry.player.name", username)),
                                         Keklist.getInstance().getMiniMessage().deserialize(translations.get("gui.blacklist.entry.player.uuid")),
-                                        Keklist.getInstance().getMiniMessage().deserialize("<white>" + uuid.toString()),
+                                        Keklist.getInstance().getMiniMessage().deserialize("<white>" + uuid),
                                         Keklist.getInstance().getMiniMessage().deserialize(translations.get("gui.blacklist.entry.player.by", byPlayer)),
                                         Keklist.getInstance().getMiniMessage().deserialize(translations.get("gui.blacklist.entry.player.date", sdf.format(new Date(unix)))),
                                         Keklist.getInstance().getMiniMessage().deserialize(translations.get("gui.blacklist.entry.reason", reason))
diff --git a/src/main/java/de/hdg/keklist/gui/events/whitelist/WhitelistEntryEvent.java b/src/main/java/de/hdg/keklist/gui/events/whitelist/WhitelistEntryEvent.java
index f601285..ed96fc3 100644
--- a/src/main/java/de/hdg/keklist/gui/events/whitelist/WhitelistEntryEvent.java
+++ b/src/main/java/de/hdg/keklist/gui/events/whitelist/WhitelistEntryEvent.java
@@ -72,7 +72,7 @@ public void onEntryClick(InventoryClickEvent event) {
                                 meta.lore(List.of(
                                         Keklist.getInstance().getMiniMessage().deserialize(translations.get("gui.whitelist.entry.player.name", username)),
                                         Keklist.getInstance().getMiniMessage().deserialize(translations.get("gui.whitelist.entry.player.uuid")),
-                                        Keklist.getInstance().getMiniMessage().deserialize("<white>" + uuid.toString()),
+                                        Keklist.getInstance().getMiniMessage().deserialize("<white>" + uuid),
                                         Keklist.getInstance().getMiniMessage().deserialize(translations.get("gui.whitelist.entry.player.by", byPlayer)),
                                         Keklist.getInstance().getMiniMessage().deserialize(translations.get("gui.whitelist.entry.player.date", sdf.format(new Date(unix))))
                                 ));
@@ -87,7 +87,7 @@ public void onEntryClick(InventoryClickEvent event) {
                             });
 
                             overview.setItem(15, removeItem);
-                            overview.setItem(18, getBackArrow(event.getClickedInventory()));
+                            overview.setItem(18, getBackArrow());
 
                             player.openInventory(overview);
                         } else {
@@ -141,7 +141,7 @@ public void onEntryClick(InventoryClickEvent event) {
                             });
 
                             overview.setItem(15, removeItem);
-                            overview.setItem(18, getBackArrow(event.getClickedInventory()));
+                            overview.setItem(18, getBackArrow());
 
                             player.openInventory(overview);
                         } else {
@@ -210,7 +210,7 @@ public void onRemoveClick(InventoryClickEvent event) throws SQLException {
 
             if (event.getCurrentItem().getType() == Material.BARRIER) {
                 ItemStack item = event.getClickedInventory().getItem(4);
-                String username = PlainTextComponentSerializer.plainText().serialize(item.getItemMeta().displayName());;
+                String username = PlainTextComponentSerializer.plainText().serialize(item.getItemMeta().displayName());
 
                 Keklist.getDatabase().onUpdate("DELETE FROM whitelist WHERE name = ?", username);
                 player.sendMessage(
@@ -239,7 +239,7 @@ public void onRemoveClick(InventoryClickEvent event) throws SQLException {
         }
     }
 
-    private ItemStack getBackArrow(Inventory inventory) {
+    private ItemStack getBackArrow() {
         int pageIndex = 0;
         int skipIndex = 0;
         boolean onlyPlayer = false;
diff --git a/src/main/java/de/hdg/keklist/util/KeklistConfigUtil.java b/src/main/java/de/hdg/keklist/util/KeklistConfigUtil.java
index 2aa9beb..98bca9a 100644
--- a/src/main/java/de/hdg/keklist/util/KeklistConfigUtil.java
+++ b/src/main/java/de/hdg/keklist/util/KeklistConfigUtil.java
@@ -16,7 +16,7 @@ public class KeklistConfigUtil {
     private static Keklist plugin;
 
     public KeklistConfigUtil(Keklist plugin) {
-        this.plugin = plugin;
+        KeklistConfigUtil.plugin = plugin;
     }
 
     public void updateConfig() {