diff --git a/web/app/assets/javascripts/react-components/mixins/ICheckMixin.js.coffee b/web/app/assets/javascripts/react-components/mixins/ICheckMixin.js.coffee
index 8c7a6cc09..38b7c247b 100644
--- a/web/app/assets/javascripts/react-components/mixins/ICheckMixin.js.coffee
+++ b/web/app/assets/javascripts/react-components/mixins/ICheckMixin.js.coffee
@@ -39,6 +39,7 @@ teacherActions = window.JK.Actions.Teacher
   setCheckboxState: () ->
     for checkbox in this.checkboxes
       @setSingleCheckbox(checkbox)
+      return
 
   enableSingle: (checkbox) ->
     selector = checkbox.selector
@@ -59,6 +60,7 @@ teacherActions = window.JK.Actions.Teacher
 
     for checkbox in this.checkboxes
       @enableSingle(checkbox)
+      return
 
     true