diff --git a/app/models/stacks_rights.rb b/app/models/stacks_rights.rb
index b26e69de..a85ab390 100644
--- a/app/models/stacks_rights.rb
+++ b/app/models/stacks_rights.rb
@@ -120,7 +120,7 @@ def cocina_file
   def find_file
     public_json.dig('structural', 'contains')
                .lazy.flat_map { |file_set| file_set.dig('structural', 'contains') }
-               .find { |file| file['filename'] == file_name } || raise("File not found '#{file_name}'")
+               .find { |file| file['filename'] == file_name } || raise(ActionController::MissingFile, "File not found '#{file_name}'")
   end
 
   def public_json
diff --git a/spec/requests/file_spec.rb b/spec/requests/file_spec.rb
index 77dac360..367890a4 100644
--- a/spec/requests/file_spec.rb
+++ b/spec/requests/file_spec.rb
@@ -86,4 +86,11 @@
       expect(response).to be_successful
     end
   end
+
+  describe 'GET missing file' do
+    it 'returns a 400 HTTP response' do
+      get '/file/xf680rd3068/path/to/99999.jp2'
+      expect(response).to have_http_status(Settings.features.cocina ? :not_found : :forbidden)
+    end
+  end
 end