diff --git a/app/assets/javascripts/discourse/controllers/topic-bulk-actions.js.es6 b/app/assets/javascripts/discourse/controllers/topic-bulk-actions.js.es6
index 4b2a19d457e..997270dc5fc 100644
--- a/app/assets/javascripts/discourse/controllers/topic-bulk-actions.js.es6
+++ b/app/assets/javascripts/discourse/controllers/topic-bulk-actions.js.es6
@@ -115,7 +115,6 @@ export default Ember.Controller.extend(ModalFunctionality, {
 
     showChangeCategory() {
       this.send('changeBulkTemplate', 'modal/bulk-change-category');
-      this.set('modal.modalClass', 'topic-bulk-actions-modal full');
     },
 
     showNotificationLevel() {