diff --git a/app/models/turn_it_in/tii_action_register_webhook.rb b/app/models/turn_it_in/tii_action_register_webhook.rb
index 8b88cf2f0..e897eaabb 100644
--- a/app/models/turn_it_in/tii_action_register_webhook.rb
+++ b/app/models/turn_it_in/tii_action_register_webhook.rb
@@ -41,10 +41,11 @@ def need_to_register_webhook?
   end
 
   def register_webhook
-    raise "TCA_SIGNING_KEY is not set" if data.signing_secret.nil?
+    key = ENV.fetch('TCA_SIGNING_KEY', nil)
+    raise "TCA_SIGNING_KEY is not set" if key.nil?
 
     data = TCAClient::WebhookWithSecret.new(
-      signing_secret: Base64.encode64(ENV.fetch('TCA_SIGNING_KEY', nil)).tr("\n", ''),
+      signing_secret: Base64.encode64(key).tr("\n", ''),
       url: TurnItIn.webhook_url,
       event_types: %w[
         SIMILARITY_COMPLETE
diff --git a/test/models/task_test.rb b/test/models/task_test.rb
index 9ad27e924..c20f32fb2 100644
--- a/test/models/task_test.rb
+++ b/test/models/task_test.rb
@@ -850,6 +850,7 @@ def test_accept_files_checks_they_all_exist
 
     task.task_status = TaskStatus.not_started
     task.save!
+    task.reload
 
     # Now... lets upload a submission with no files
     task.accept_submission user, [], user, self, nil, 'ready_for_feedback', nil
@@ -860,7 +861,16 @@ def test_accept_files_checks_they_all_exist
 
     # Now... lets upload a submission with too many files
     begin
-      task.accept_submission user, [], user, self, nil, 'ready_for_feedback', nil
+      task.accept_submission user,
+        [
+          {
+            id: 'file0',
+            name: 'Document 1',
+            type: 'document',
+            filename: 'file0.pdf',
+            "tempfile" => File.new(test_file_path('submissions/1.2P.pdf'))
+          }
+        ], user, self, nil, 'ready_for_feedback', nil
       assert false, 'Should have raised an error with too many files submitted'
     rescue StandardError => e
       assert_equal :not_started, task.status
diff --git a/test/sidekiq/tii_webhooks_job_test.rb b/test/sidekiq/tii_webhooks_job_test.rb
index 08fbe9dd4..2381029ca 100644
--- a/test/sidekiq/tii_webhooks_job_test.rb
+++ b/test/sidekiq/tii_webhooks_job_test.rb
@@ -5,6 +5,9 @@ class TiiWebhooksJobTest < ActiveSupport::TestCase
   include TestHelpers::TiiTestHelper
 
   def test_register_webhooks
+    setup_tii_eula
+    setup_tii_features_enabled
+
     Doubtfire::Application.config.tii_register_webhook = true
 
     # Will ask for current webhooks
@@ -32,14 +35,17 @@ def test_register_webhooks
           ]
         )
       ].to_json,
-      headers: {})
+      headers: {}
+    )
+
+    ENV['TCA_SIGNING_KEY'] = 'TESTING'
 
     # and will register the webhooks
     register_webhooks_stub = stub_request(:post, "https://#{ENV['TCA_HOST']}/api/v1/webhooks")
                              .with(tii_headers)
                              .with(
                                body: TCAClient::WebhookWithSecret.new(
-                                 signing_secret: Base64.encode64(ENV.fetch('TCA_SIGNING_KEY', nil)).tr("\n", '' ),
+                                 signing_secret: Base64.encode64(ENV.fetch('TCA_SIGNING_KEY', nil)).tr("\n", ''),
                                  url: TurnItIn.webhook_url,
                                  event_types: [
                                    'SIMILARITY_COMPLETE',