diff --git a/app/controllers/exercises_controller.rb b/app/controllers/exercises_controller.rb
index 5eab7a02..85131009 100644
--- a/app/controllers/exercises_controller.rb
+++ b/app/controllers/exercises_controller.rb
@@ -24,6 +24,10 @@ class ExercisesController < ApplicationController
     3
   end
 
+  def max_intervention_count_per_exercise
+    1
+  end
+
 
   def java_course_token
     "702cbd2a-c84c-4b37-923a-692d7d1532d0"
@@ -167,7 +171,7 @@ class ExercisesController < ApplicationController
     redirect_to(@exercise, alert: t('exercises.implement.no_files')) unless @exercise.files.visible.exists?
     user_solved_exercise = @exercise.has_user_solved(current_user)
     count_interventions_today = UserExerciseIntervention.where(user: current_user).where("created_at >= ?", Time.zone.now.beginning_of_day).count
-    user_got_intervention_in_exercise = ! UserExerciseIntervention.where(user: current_user, exercise: @exercise).empty?
+    user_got_intervention_in_exercise = UserExerciseIntervention.where(user: current_user, exercise: @exercise).size >= max_intervention_count_per_exercise
     user_got_enough_interventions = count_interventions_today >= max_intervention_count_per_day || user_got_intervention_in_exercise
     is_java_course = @course_token && @course_token.eql?(java_course_token)