diff --git a/utils/functions/bedwars.js b/utils/functions/bedwars.js
index 037445c..54c6def 100644
--- a/utils/functions/bedwars.js
+++ b/utils/functions/bedwars.js
@@ -1,3 +1,6 @@
+/*
+    Code used from the slothpixel project https://github.com/slothpixel/core
+*/
 function getExpForLevel(level) {
     if (level == 0) return 0;
 
diff --git a/utils/functions/hypixel.js b/utils/functions/hypixel.js
index 3dd8f10..ced5c87 100644
--- a/utils/functions/hypixel.js
+++ b/utils/functions/hypixel.js
@@ -1,3 +1,6 @@
+/*
+    Code used from the slothpixel project https://github.com/slothpixel/core
+*/
 const BASE = 10000;
 const GROWTH = 2500;
 const HALF_GROWTH = 0.5 * GROWTH;
diff --git a/utils/functions/skywars.js b/utils/functions/skywars.js
index bc75e9a..4bce25d 100644
--- a/utils/functions/skywars.js
+++ b/utils/functions/skywars.js
@@ -1,3 +1,6 @@
+/*
+    Code used from the slothpixel project https://github.com/slothpixel/core
+*/
 function skywarsLevel(xp) {
     var xps = [0, 20, 70, 150, 250, 500, 1000, 2000, 3500, 6000, 10000, 15000];
     let exactLevel = 0