diff --git a/identity-model/src/IdentityModel/Client/HttpClientDeviceFlowExtensions.cs b/identity-model/src/IdentityModel/Client/HttpClientDeviceFlowExtensions.cs
index 12e074f6..48b4c8c4 100644
--- a/identity-model/src/IdentityModel/Client/HttpClientDeviceFlowExtensions.cs
+++ b/identity-model/src/IdentityModel/Client/HttpClientDeviceFlowExtensions.cs
@@ -22,6 +22,7 @@ public static async Task<DeviceAuthorizationResponse> RequestDeviceAuthorization
         var clone = request.Clone();
 
         clone.Parameters.AddOptional(OidcConstants.AuthorizeRequest.Scope, request.Scope);
+        clone.Parameters.AddRequired(OidcConstants.AuthorizeRequest.ClientId, request.ClientId);
         clone.Method = HttpMethod.Post;
         clone.Prepare();