diff --git a/src/Core/Auth/Exceptions/DuplicateAuthRequestException.cs b/src/Core/Auth/Exceptions/DuplicateAuthRequestException.cs
index c3c674e023..1a0970362c 100644
--- a/src/Core/Auth/Exceptions/DuplicateAuthRequestException.cs
+++ b/src/Core/Auth/Exceptions/DuplicateAuthRequestException.cs
@@ -1,6 +1,8 @@
-namespace Bit.Core.Auth.Exceptions;
+using Bit.Core.Exceptions;
 
-public class DuplicateAuthRequestException : Exception
+namespace Bit.Core.Auth.Exceptions;
+
+public class DuplicateAuthRequestException : BadRequestException
 {
     public DuplicateAuthRequestException()
         : base("An authentication request with the same device already exists.")