diff --git a/Libraries/SPTarkov.Reflection/CodeWrapper/CodeGenerator.cs b/Libraries/SPTarkov.Reflection/CodeWrapper/CodeGenerator.cs
index 2c68965d..a54002f6 100644
--- a/Libraries/SPTarkov.Reflection/CodeWrapper/CodeGenerator.cs
+++ b/Libraries/SPTarkov.Reflection/CodeWrapper/CodeGenerator.cs
@@ -68,7 +68,7 @@ public class CodeGenerator
     {
         if (code.GetLabel() == null)
         {
-            return new List<Label>();
+            return [];
         }
 
         return [ (Label)code.GetLabel() ];
diff --git a/Libraries/SPTarkov.Server.Core/Callbacks/ProfileCallbacks.cs b/Libraries/SPTarkov.Server.Core/Callbacks/ProfileCallbacks.cs
index e26d369f..b8422abe 100644
--- a/Libraries/SPTarkov.Server.Core/Callbacks/ProfileCallbacks.cs
+++ b/Libraries/SPTarkov.Server.Core/Callbacks/ProfileCallbacks.cs
@@ -5,6 +5,7 @@ using SPTarkov.Server.Core.Models.Eft.Common;
 using SPTarkov.Server.Core.Models.Eft.Launcher;
 using SPTarkov.Server.Core.Models.Eft.Profile;
 using SPTarkov.Server.Core.Models.Enums;
+using SPTarkov.Server.Core.Models.Spt.Launcher;
 using SPTarkov.Server.Core.Utils;
 
 namespace SPTarkov.Server.Core.Callbacks;
@@ -72,20 +73,20 @@ public class ProfileCallbacks(
     ///     Handle client/game/profile/nickname/change event
     ///     Client allows player to adjust their profile name
     /// </summary>
-    /// <returns></returns>
-    public string ChangeNickname(string url, ProfileChangeNicknameRequestData info, string sessionID)
+    /// <returns>Client response as string</returns>
+    public string ChangeNickname(string url, ProfileChangeNicknameRequestData info, string sessionId)
     {
-        var output = _profileController.ChangeNickname(info, sessionID);
+        var output = _profileController.ChangeNickname(info, sessionId);
 
         return output switch
         {
-            "taken" => _httpResponse.GetBody<object?>(null, BackendErrorCodes.NicknameNotUnique, "The nickname is already in use"),
-            "tooshort" => _httpResponse.GetBody<object?>(null, BackendErrorCodes.NicknameNotValid, "The nickname is too short"),
+            NicknameValidationResult.Taken => _httpResponse.GetBody<object?>(null, BackendErrorCodes.NicknameNotUnique, $"{BackendErrorCodes.NicknameNotUnique} - "),
+            NicknameValidationResult.Short => _httpResponse.GetBody<object?>(null, BackendErrorCodes.NicknameNotValid, $"{BackendErrorCodes.NicknameNotValid} - "),
             _ => _httpResponse.GetBody<object>(
                 new
                 {
                     status = 0,
-                    nicknamechangedate = _timeUtil.GetTimeStamp()
+                    NicknameChangeDate = _timeUtil.GetTimeStamp()
                 }
             )
         };
@@ -94,15 +95,13 @@ public class ProfileCallbacks(
     /// <summary>
     ///     Handle client/game/profile/nickname/validate
     /// </summary>
-    /// <returns></returns>
-    public string ValidateNickname(string url, ValidateNicknameRequestData info, string sessionID)
+    /// <returns>Client response as string</returns>
+    public string ValidateNickname(string url, ValidateNicknameRequestData info, string sessionId)
     {
-        var output = _profileController.ValidateNickname(info, sessionID);
-
-        return output switch
+        return _profileController.ValidateNickname(info, sessionId) switch
         {
-            "taken" => _httpResponse.GetBody<object?>(null, BackendErrorCodes.NicknameNotUnique, "The nickname is already in use"),
-            "tooshort" => _httpResponse.GetBody<object?>(null, BackendErrorCodes.NicknameNotValid, "The nickname is too short"),
+            NicknameValidationResult.Taken => _httpResponse.GetBody<object?>(null, BackendErrorCodes.NicknameNotUnique, $"{BackendErrorCodes.NicknameNotUnique} - "),
+            NicknameValidationResult.Short => _httpResponse.GetBody<object?>(null, BackendErrorCodes.NicknameNotValid, $"{BackendErrorCodes.NicknameNotValid} - "),
             _ => _httpResponse.GetBody(
                 new
                 {
@@ -116,11 +115,12 @@ public class ProfileCallbacks(
     ///     Handle client/game/profile/nickname/reserved
     /// </summary>
     /// <returns></returns>
-    public string GetReservedNickname(string url, EmptyRequestData _, string sessionID)
+    public string GetReservedNickname(string url, EmptyRequestData _, string sessionId)
     {
-        var fullProfile = _profileHelper.GetFullProfile(sessionID);
+        var fullProfile = _profileHelper.GetFullProfile(sessionId);
         if (fullProfile?.ProfileInfo?.Username is not null)
         {
+            // Send players name back to them
             return _httpResponse.GetBody(fullProfile?.ProfileInfo?.Username);
         }
 
@@ -132,9 +132,9 @@ public class ProfileCallbacks(
     ///     Called when creating a character when choosing a character face/voice
     /// </summary>
     /// <returns></returns>
-    public string GetProfileStatus(string url, EmptyRequestData _, string sessionID)
+    public string GetProfileStatus(string url, EmptyRequestData _, string sessionId)
     {
-        return _httpResponse.GetBody(_profileController.GetProfileStatus(sessionID));
+        return _httpResponse.GetBody(_profileController.GetProfileStatus(sessionId));
     }
 
     /// <summary>
diff --git a/Libraries/SPTarkov.Server.Core/Controllers/ProfileController.cs b/Libraries/SPTarkov.Server.Core/Controllers/ProfileController.cs
index f17f46bc..2d12770c 100644
--- a/Libraries/SPTarkov.Server.Core/Controllers/ProfileController.cs
+++ b/Libraries/SPTarkov.Server.Core/Controllers/ProfileController.cs
@@ -6,6 +6,7 @@ using SPTarkov.Server.Core.Models.Eft.Common.Tables;
 using SPTarkov.Server.Core.Models.Eft.Launcher;
 using SPTarkov.Server.Core.Models.Eft.Profile;
 using SPTarkov.Server.Core.Models.Enums;
+using SPTarkov.Server.Core.Models.Spt.Launcher;
 using SPTarkov.Server.Core.Models.Utils;
 using SPTarkov.Server.Core.Routers;
 using SPTarkov.Server.Core.Servers;
@@ -104,54 +105,54 @@ public class ProfileController(
     /// <summary>
     ///     Handle client/game/profile/list
     /// </summary>
-    /// <param name="sessionID">Session/Player id</param>
+    /// <param name="sessionId">Session/Player id</param>
     /// <returns>Return a full profile, scav and pmc profiles + meta data</returns>
-    public virtual List<PmcData> GetCompleteProfile(string sessionID)
+    public virtual List<PmcData> GetCompleteProfile(string sessionId)
     {
-        return _profileHelper.GetCompleteProfile(sessionID);
+        return _profileHelper.GetCompleteProfile(sessionId);
     }
 
     /// <summary>
     ///     Handle client/game/profile/create
     /// </summary>
     /// <param name="request">Create profile request</param>
-    /// <param name="sessionID">Player id</param>
+    /// <param name="sessionId">Player id</param>
     /// <returns>Player id</returns>
-    public virtual string CreateProfile(ProfileCreateRequestData request, string sessionID)
+    public virtual string CreateProfile(ProfileCreateRequestData request, string sessionId)
     {
-        return _createProfileService.CreateProfile(sessionID, request);
+        return _createProfileService.CreateProfile(sessionId, request);
     }
 
     /// <summary>
     ///     Generate a player scav object
     ///     PMC profile MUST exist first before player-scav can be generated
     /// </summary>
-    /// <param name="sessionID">Player id</param>
+    /// <param name="sessionId">Player id</param>
     /// <returns>PmcData</returns>
-    public virtual PmcData GeneratePlayerScav(string sessionID)
+    public virtual PmcData GeneratePlayerScav(string sessionId)
     {
-        return _playerScavGenerator.Generate(sessionID);
+        return _playerScavGenerator.Generate(sessionId);
     }
 
     /// <summary>
     ///     Handle client/game/profile/nickname/validate
     /// </summary>
     /// <param name="request">Validate nickname request</param>
-    /// <param name="sessionID">Session/Player id</param>
+    /// <param name="sessionId">Session/Player id</param>
     /// <returns></returns>
-    public virtual string ValidateNickname(ValidateNicknameRequestData request, string sessionID)
+    public virtual NicknameValidationResult ValidateNickname(ValidateNicknameRequestData request, string sessionId)
     {
-        if (request.Nickname.Length < 3)
+        if (request.Nickname?.Length < 3)
         {
-            return "tooshort";
+            return NicknameValidationResult.Short;
         }
 
-        if (_profileHelper.IsNicknameTaken(request, sessionID))
+        if (_profileHelper.IsNicknameTaken(request, sessionId))
         {
-            return "taken";
+            return NicknameValidationResult.Taken;
         }
 
-        return "OK";
+        return NicknameValidationResult.Valid;
     }
 
     /// <summary>
@@ -159,21 +160,21 @@ public class ProfileController(
     ///     Client allows player to adjust their profile name
     /// </summary>
     /// <param name="request">Change nickname request</param>
-    /// <param name="sessionID">Player id</param>
+    /// <param name="sessionId">Player id</param>
     /// <returns></returns>
-    public virtual string ChangeNickname(ProfileChangeNicknameRequestData request, string sessionID)
+    public virtual NicknameValidationResult ChangeNickname(ProfileChangeNicknameRequestData request, string sessionId)
     {
         var output = ValidateNickname(
             new ValidateNicknameRequestData
             {
                 Nickname = request.Nickname
             },
-            sessionID
+            sessionId
         );
 
-        if (output == "OK")
+        if (output == NicknameValidationResult.Valid)
         {
-            var pmcData = _profileHelper.GetPmcProfile(sessionID);
+            var pmcData = _profileHelper.GetPmcProfile(sessionId);
 
             pmcData.Info.Nickname = request.Nickname;
             pmcData.Info.LowerNickname = request.Nickname.ToLower();
diff --git a/Libraries/SPTarkov.Server.Core/Models/Spt/Launcher/NicknameValidationResult.cs b/Libraries/SPTarkov.Server.Core/Models/Spt/Launcher/NicknameValidationResult.cs
new file mode 100644
index 00000000..68c7439b
--- /dev/null
+++ b/Libraries/SPTarkov.Server.Core/Models/Spt/Launcher/NicknameValidationResult.cs
@@ -0,0 +1,9 @@
+namespace SPTarkov.Server.Core.Models.Spt.Launcher
+{
+    public enum NicknameValidationResult
+    {
+        Taken,
+        Short,
+        Valid
+    }
+}