diff --git a/src/Api/Controllers/DevicesController.cs b/src/Api/Controllers/DevicesController.cs
index 6787fe515c..46e312bc03 100644
--- a/src/Api/Controllers/DevicesController.cs
+++ b/src/Api/Controllers/DevicesController.cs
@@ -1,4 +1,4 @@
-using Api.Models.Request;
+using System.ComponentModel.DataAnnotations;
 using Bit.Api.Auth.Models.Request;
 using Bit.Api.Auth.Models.Request.Accounts;
 using Bit.Api.Models.Request;
@@ -207,8 +207,10 @@ public class DevicesController : Controller
 
     [AllowAnonymous]
     [HttpGet("knowndevice")]
-    public async Task<bool> GetByIdentifierQuery([FromHeader] KnownDeviceRequestModel request)
-        => await GetByIdentifier(CoreHelpers.Base64UrlDecodeString(request.Email), request.DeviceIdentifier);
+    public async Task<bool> GetByIdentifierQuery(
+            [Required][FromHeader(Name = "X-Request-Email")] string Email,
+            [Required][FromHeader(Name = "X-Device-Identifier")] string DeviceIdentifier)
+        => await GetByIdentifier(CoreHelpers.Base64UrlDecodeString(Email), DeviceIdentifier);
 
     [Obsolete("Path is deprecated due to encoding issues, use /knowndevice instead.")]
     [AllowAnonymous]
diff --git a/src/Api/Models/Request/KnownDeviceRequestModel.cs b/src/Api/Models/Request/KnownDeviceRequestModel.cs
deleted file mode 100644
index 8232f596af..0000000000
--- a/src/Api/Models/Request/KnownDeviceRequestModel.cs
+++ /dev/null
@@ -1,16 +0,0 @@
-using System.ComponentModel.DataAnnotations;
-using Microsoft.AspNetCore.Mvc;
-
-namespace Api.Models.Request;
-
-public class KnownDeviceRequestModel
-{
-    [Required]
-    [FromHeader(Name = "X-Request-Email")]
-    public string Email { get; set; }
-
-    [Required]
-    [FromHeader(Name = "X-Device-Identifier")]
-    public string DeviceIdentifier { get; set; }
-
-}