diff --git a/spec/factories/user_exercise_feedback.rb b/spec/factories/user_exercise_feedback.rb
index 42c5d803..3c43158f 100644
--- a/spec/factories/user_exercise_feedback.rb
+++ b/spec/factories/user_exercise_feedback.rb
@@ -2,6 +2,7 @@ FactoryBot.define do
   factory :user_exercise_feedback, class: UserExerciseFeedback do
     created_by_external_user
     feedback_text 'Most suitable exercise ever'
+    association :exercise, factory: :math
   end
 
 end
diff --git a/test/factories/error_template_attributes.rb b/test/factories/error_template_attributes.rb
index 84e65757..2e867ec5 100644
--- a/test/factories/error_template_attributes.rb
+++ b/test/factories/error_template_attributes.rb
@@ -1,6 +1,5 @@
 FactoryBot.define do
   factory :error_template_attribute do
-    error_template nil
     key "MyString"
     regex "MyString"
   end