diff --git a/app/views/exercises/index.html.slim b/app/views/exercises/index.html.slim
index 46ba1d4b..8f6267a5 100644
--- a/app/views/exercises/index.html.slim
+++ b/app/views/exercises/index.html.slim
@@ -4,7 +4,7 @@ h1 = Exercise.model_name.human(count: 2)
   .row.px-3
     .form-group
       = f.label(:execution_environment_id_eq, t('activerecord.attributes.exercise.execution_environment'), class: 'sr-only')
-      = f.collection_select(:execution_environment_id_eq, ExecutionEnvironment.with_exercises, :id, :name, class: 'form-control', prompt: t('activerecord.attributes.exercise.execution_environment'))
+      = f.collection_select(:execution_environment_id_eq, @execution_environments.with_exercises, :id, :name, class: 'form-control', prompt: t('activerecord.attributes.exercise.execution_environment'))
     .form-group
       = f.label(:title_cont, t('activerecord.attributes.exercise.title'), class: 'sr-only')
       = f.search_field(:title_cont, class: 'form-control', placeholder: t('activerecord.attributes.exercise.title'))