diff --git a/MiraAPI/Patches/Roles/RoleManagerPatches.cs b/MiraAPI/Patches/Roles/RoleManagerPatches.cs
index fa0cb5a..93daa82 100644
--- a/MiraAPI/Patches/Roles/RoleManagerPatches.cs
+++ b/MiraAPI/Patches/Roles/RoleManagerPatches.cs
@@ -33,7 +33,7 @@ public static class RoleManagerPatches
             data.Role.Deinitialize(targetPlayer);
             Object.Destroy(data.Role.gameObject);
         }
-        var roleBehaviour = Object.Instantiate<RoleBehaviour>(__instance.AllRoles.First(r => r.Role == roleType), data.gameObject.transform);
+        var roleBehaviour = Object.Instantiate<RoleBehaviour>(__instance.AllRoles.ToArray().First(r => r.Role == roleType), data.gameObject.transform);
         roleBehaviour.Initialize(targetPlayer);
         targetPlayer.Data.Role = roleBehaviour;
         targetPlayer.Data.RoleType = roleType;
diff --git a/MiraAPI/Roles/CustomRoleManager.cs b/MiraAPI/Roles/CustomRoleManager.cs
index 5e1c3ae..d16153b 100644
--- a/MiraAPI/Roles/CustomRoleManager.cs
+++ b/MiraAPI/Roles/CustomRoleManager.cs
@@ -35,6 +35,11 @@ public static class CustomRoleManager
     public static readonly LoadableAsset<AudioClip> ImpostorIntroSound =
         CustomRoleUtils.GetIntroSound(RoleTypes.Impostor)!;
 
+    /// <summary>
+    /// Gets the list of all roles from vanilla RoleManager.
+    /// </summary>
+    public static RoleBehaviour[] AllRoles => RoleManager.Instance.AllRoles.ToArray();
+
     /// <summary>
     /// Gets the list of custom roles as RoleBehaviour objects.
     /// </summary>
@@ -57,7 +62,10 @@ public static class CustomRoleManager
 
     internal static void RegisterInRoleManager()
     {
-        RoleManager.Instance.AllRoles = RoleManager.Instance.AllRoles.Concat(CustomRoles.Values).ToArray();
+        foreach (var role in CustomRoles.Values)
+        {
+            RoleManager.Instance.AllRoles.Add(role);
+        }
 
         foreach (var role in CustomRoles.Values.Where(x => x.IsDead))
         {
diff --git a/MiraAPI/Roles/CustomRoleUtils.cs b/MiraAPI/Roles/CustomRoleUtils.cs
index 01b402d..cb4dbfb 100644
--- a/MiraAPI/Roles/CustomRoleUtils.cs
+++ b/MiraAPI/Roles/CustomRoleUtils.cs
@@ -4,7 +4,6 @@ using System.Linq;
 using System.Text;
 using AmongUs.GameOptions;
 using MiraAPI.Utilities.Assets;
-using Reactor.Utilities;
 using UnityEngine;
 
 namespace MiraAPI.Roles;
@@ -56,7 +55,7 @@ public static class CustomRoleUtils
     /// <returns>The intro sound.</returns>
     public static LoadableAsset<AudioClip>? GetIntroSound(RoleTypes roleType)
     {
-        var role = RoleManager.Instance.AllRoles.FirstOrDefault(role => role.Role == roleType);
+        var role = CustomRoleManager.AllRoles.FirstOrDefault(role => role.Role == roleType);
         if (role is ICustomRole customRole)
         {
             return customRole.Configuration.IntroSound;