diff --git a/src/main/java/com/saicone/uclansync/core/PlayerUpdateTask.java b/src/main/java/com/saicone/uclansync/core/PlayerUpdateTask.java
index f36de33..4f5520b 100644
--- a/src/main/java/com/saicone/uclansync/core/PlayerUpdateTask.java
+++ b/src/main/java/com/saicone/uclansync/core/PlayerUpdateTask.java
@@ -21,7 +21,7 @@ public PlayerUpdateTask(ClanUpdater updater) {
     public String getPlayersAsJson() {
         // No need to use JsonObject class, just simple formatting with StringBuilder
         StringBuilder builder = new StringBuilder();
-        connected.forEach((player, uuid) -> builder.append(", \"").append(player).append("\": \"").append(uuid).append("\""));
+        new HashMap<>(connected).forEach((player, uuid) -> builder.append(", \"").append(player).append("\": \"").append(uuid).append("\""));
         return "{" + (builder.length() > 0 ? builder.substring(2) : "") + "}";
     }
 
diff --git a/src/main/java/com/saicone/uclansync/util/Config.java b/src/main/java/com/saicone/uclansync/util/Config.java
deleted file mode 100644
index 5a0d61f..0000000
--- a/src/main/java/com/saicone/uclansync/util/Config.java
+++ /dev/null
@@ -1,62 +0,0 @@
-package com.saicone.uclansync.util;
-
-import org.bukkit.configuration.ConfigurationSection;
-
-import java.util.HashMap;
-import java.util.Map;
-
-public class Config {
-
-    Config() {
-    }
-
-    @SuppressWarnings("unchecked")
-    public static <V> Map<String, V> of(Map<?, V> map) {
-        try {
-            return (Map<String, V>) map;
-        } catch (ClassCastException e) {
-            Map<String, V> finalMap = new HashMap<>();
-            map.forEach((key, value) -> finalMap.put(String.valueOf(key), value));
-            return finalMap;
-        }
-    }
-
-    public static String findKey(Iterable<String> iterable, String key) {
-        for (String s : iterable) {
-            if (s.equalsIgnoreCase(key)) {
-                return s;
-            }
-        }
-        return null;
-    }
-
-    public static <T> T getValue(Map<String, ?> map, String key) {
-        return getValue(map, key, null);
-    }
-
-    @SuppressWarnings("unchecked")
-    public static <T> T getValue(Map<String, ?> map, String key, T def) {
-        if (map != null) {
-            String found = findKey(map.keySet(), key);
-            if (found != null) {
-                try {
-                    return (T) map.get(found);
-                } catch (ClassCastException ignored) { }
-            }
-        }
-        return def;
-    }
-
-    public static Map<String, Object> toMap(ConfigurationSection section) {
-        Map<String, Object> map = new HashMap<>();
-        section.getKeys(false).forEach((key) -> {
-            Object object = section.get(key);
-            if (object instanceof ConfigurationSection) {
-                map.put(key, toMap((ConfigurationSection) object));
-            } else {
-                map.put(key, object);
-            }
-        });
-        return map;
-    }
-}