diff --git a/src/main/java/netneutrality/MusicBot.java b/src/main/java/netneutrality/MusicBot.java
index 468f701..1b8ab1a 100644
--- a/src/main/java/netneutrality/MusicBot.java
+++ b/src/main/java/netneutrality/MusicBot.java
@@ -17,7 +17,6 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import javax.security.auth.login.LoginException;
-import java.io.IOException;
 
 public class MusicBot {
 
diff --git a/src/main/java/netneutrality/command/basic/HelpCommand.java b/src/main/java/netneutrality/command/basic/HelpCommand.java
index f637acd..4adc295 100644
--- a/src/main/java/netneutrality/command/basic/HelpCommand.java
+++ b/src/main/java/netneutrality/command/basic/HelpCommand.java
@@ -2,12 +2,10 @@ package netneutrality.command.basic;
 
 import java.awt.Color;
 import java.util.HashMap;
-import java.util.function.Consumer;
 
 import net.dv8tion.jda.core.EmbedBuilder;
 import net.dv8tion.jda.core.MessageBuilder;
 import net.dv8tion.jda.core.entities.MessageChannel;
-import net.dv8tion.jda.core.entities.PrivateChannel;
 import net.dv8tion.jda.core.entities.TextChannel;
 import net.dv8tion.jda.core.entities.User;
 import net.dv8tion.jda.core.events.message.MessageReceivedEvent;
diff --git a/src/main/java/netneutrality/command/message/BlacklistCommand.java b/src/main/java/netneutrality/command/message/BlacklistCommand.java
index 3c794ff..6631496 100644
--- a/src/main/java/netneutrality/command/message/BlacklistCommand.java
+++ b/src/main/java/netneutrality/command/message/BlacklistCommand.java
@@ -3,7 +3,6 @@ package netneutrality.command.message;
 import java.util.ArrayList;
 import java.util.function.Consumer;
 
-import net.dv8tion.jda.core.entities.Message;
 import net.dv8tion.jda.core.events.message.MessageReceivedEvent;
 import netneutrality.command.AbstractCommand;
 import netneutrality.command.Visibility;
@@ -69,7 +68,7 @@ public class BlacklistCommand extends AbstractCommand {
 							@Override
 							public void accept(ArrayList<MBlacklist> mBlacklists) {
 								for (MBlacklist bl : mBlacklists) {
-									sb.append(bl.getWord() + " -> " + (bl.isEnabled() ? "enabled" : "disabled") + "\n");
+									sb.append(bl.getWord()).append(" -> ").append(bl.isEnabled() ? "enabled" : "disabled").append("\n");
 								}
 
 								t.editMessage("List of blacklisted words for this server [" + event.getGuild().getName() + "] :\n" + (mBlacklists.isEmpty() ? "No word found" : sb.toString())).queue();
diff --git a/src/main/java/netneutrality/command/specific/DatabaseCommand.java b/src/main/java/netneutrality/command/specific/DatabaseCommand.java
index 7702ca1..3a7164a 100644
--- a/src/main/java/netneutrality/command/specific/DatabaseCommand.java
+++ b/src/main/java/netneutrality/command/specific/DatabaseCommand.java
@@ -89,11 +89,11 @@ public class DatabaseCommand extends AbstractCommand {
 							EmbedBuilder embed = new EmbedBuilder();
 							embed.setColor(Color.BLUE);
 							embed.setTimestamp(OffsetDateTime.now());
-							for (int i = 0; i < messages.size(); i++) {
+							for (MMessage message1 : messages) {
 								embed.addField(
-										"Message in channel \"" + messages.get(i).getChannelName() + "\" sent on "
-												+ messages.get(i).getDateSent(),
-										"" + messages.get(i).getMessage(), false);
+										"Message in channel \"" + message1.getChannelName() + "\" sent on "
+												+ message1.getDateSent(),
+										"" + message1.getMessage(), false);
 							}
 							embed.setFooter("Guild : " + event.getGuild().getName(), null);
 
diff --git a/src/main/java/netneutrality/music/MusicManager.java b/src/main/java/netneutrality/music/MusicManager.java
index db9140d..c81ff7f 100644
--- a/src/main/java/netneutrality/music/MusicManager.java
+++ b/src/main/java/netneutrality/music/MusicManager.java
@@ -79,7 +79,7 @@ public class MusicManager {
         return player.getPlayingTrack();
     }
 
-    public boolean leave() {
+    public void leave() {
         if (isConnected()) {
             stopMusic();
         }
@@ -89,7 +89,6 @@ public class MusicManager {
             guild.getAudioManager().closeAudioConnection();
         }
 
-        return true;
     }
 
     public synchronized void stopMusic() {
diff --git a/src/main/java/netneutrality/utils/MessageFunction.java b/src/main/java/netneutrality/utils/MessageFunction.java
index 2e27984..9858fd6 100644
--- a/src/main/java/netneutrality/utils/MessageFunction.java
+++ b/src/main/java/netneutrality/utils/MessageFunction.java
@@ -7,9 +7,7 @@ package netneutrality.utils;
  */
 
 import java.awt.*;
-import java.util.ArrayList;
 import java.util.List;
-import java.util.function.Consumer;
 
 import com.sedmelluq.discord.lavaplayer.track.AudioTrack;
 import net.dv8tion.jda.core.EmbedBuilder;
diff --git a/src/main/resources/log4j2.xml b/src/main/resources/log4j2.xml
index 5bde378..e0516ea 100644
--- a/src/main/resources/log4j2.xml
+++ b/src/main/resources/log4j2.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<Configuration status="WARN">
+<Configuration status="WARN" xmlns="http://logging.apache.org/log4j/2.0/config">
     <Appenders>
         <Console name="Console" target="SYSTEM_OUT">
             <PatternLayout pattern="%d{HH:mm:ss.SSS} [%-5level] %msg%n" />