diff -u b/core/profiles/standard/config/install/user.role.content_editor.yml b/core/profiles/standard/config/install/user.role.content_editor.yml
--- b/core/profiles/standard/config/install/user.role.content_editor.yml
+++ b/core/profiles/standard/config/install/user.role.content_editor.yml
@@ -20,6 +20,7 @@
  - 'administer url aliases'
  - 'create article content'
  - 'create book content'
+ - 'edit own comments'
  - 'create content translations'
  - 'create media'
  - 'create new books'