diff --git a/bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/protocollib/VerifyResponseTask.java b/bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/protocollib/VerifyResponseTask.java
index b54d843c..3013a488 100644
--- a/bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/protocollib/VerifyResponseTask.java
+++ b/bukkit/src/main/java/com/github/games647/fastlogin/bukkit/listener/protocollib/VerifyResponseTask.java
@@ -175,16 +175,20 @@ public class VerifyResponseTask implements Runnable {
     }
 
     private boolean enableEncryption(SecretKey loginKey) throws IllegalArgumentException {
+        // Initialize method reflections
         if (encryptMethod == null) {
             Class<?> networkManagerClass = MinecraftReflection.getNetworkManagerClass();
 
             try {
+                // Try to get the old (pre MC 1.16.4) encryption method
                 encryptMethod = FuzzyReflection.fromClass(networkManagerClass)
                         .getMethodByParameters("a", SecretKey.class);
             } catch (IllegalArgumentException exception) {
+                // Get the new encryption method
                 encryptMethod = FuzzyReflection.fromClass(networkManagerClass)
                         .getMethodByParameters("a", Cipher.class, Cipher.class);
 
+                // Get the needed Cipher helper method (used to generate ciphers from login key)
                 Class<?> encryptionClass = MinecraftReflection.getMinecraftClass("MinecraftEncryption");
                 cipherMethod = FuzzyReflection.fromClass(encryptionClass)
                         .getMethodByParameters("a", int.class, Key.class);
@@ -194,13 +198,17 @@ public class VerifyResponseTask implements Runnable {
         try {
             Object networkManager = this.getNetworkManager();
 
+            // If cipherMethod is null - use old encryption (pre MC 1.16.4), otherwise use the new cipher one
             if (cipherMethod == null) {
+                // Encrypt/decrypt packet flow, this behaviour is expected by the client
                 encryptMethod.invoke(networkManager, loginKey);
             } else {
-                Object cipher = cipherMethod.invoke(null, 2, loginKey);
-                Object cipher1 = cipherMethod.invoke(null, 1, loginKey);
+                // Create ciphers from login key
+                Object decryptionCipher = cipherMethod.invoke(null, Cipher.DECRYPT_MODE, loginKey);
+                Object encryptionCipher = cipherMethod.invoke(null, Cipher.ENCRYPT_MODE, loginKey);
 
-                encryptMethod.invoke(networkManager, cipher, cipher1);
+                // Encrypt/decrypt packet flow, this behaviour is expected by the client
+                encryptMethod.invoke(networkManager, decryptionCipher, encryptionCipher);
             }
         } catch (Exception ex) {
             disconnect("error-kick", false, "Couldn't enable encryption", ex);