diff --git a/app/views/exercises/_export_actions.html.slim b/app/views/exercises/_export_actions.html.slim
index 73993cb9..8e74c12f 100644
--- a/app/views/exercises/_export_actions.html.slim
+++ b/app/views/exercises/_export_actions.html.slim
@@ -1,14 +1,14 @@
 - if error
-  = button_tag type: 'button', class:'btn btn-primary float-end export-button export-retry-button', data: {exercise_id: exercise.id} do
+  = button_tag type: 'button', class: 'btn btn-primary float-end export-button export-retry-button', data: {exercise_id: exercise.id} do
     i.fa-solid.fa-arrows-rotate.confirm-icon
     = t('exercises.export_codeharbor.buttons.retry')
 - else
   - unless exported
     - if !uuid_found || update_right
-      = button_tag type: 'button', class:'btn btn-primary float-end export-action export-button', data: {exercise_id: exercise.id} do
+      = button_tag type: 'button', class: 'btn btn-primary float-end export-action export-button', data: {exercise_id: exercise.id} do
         i.fa-solid.fa-check.confirm-icon
         = t('exercises.export_codeharbor.buttons.export')
 
-= button_tag type: 'submit', class:'btn btn-secondary float-end export-button', data: {bs_dismiss: 'modal'} do
+= button_tag type: 'submit', class: 'btn btn-secondary float-end export-button', data: {bs_dismiss: 'modal'} do
   i.fa-solid.fa-xmark.abort-icon
   = exported ? t('exercises.export_codeharbor.buttons.close') : t('exercises.export_codeharbor.buttons.abort')