diff --git a/config/locales/server.en.yml b/config/locales/server.en.yml
index c52044fe2ec..21b54dfca4d 100644
--- a/config/locales/server.en.yml
+++ b/config/locales/server.en.yml
@@ -1533,8 +1533,8 @@ en:
     edit_history_visible_to_public: "Allow everyone to see previous versions of an edited post. When disabled, only staff members can view."
     delete_removed_posts_after: "Posts removed by the author will be automatically deleted after (n) hours. If set to 0, posts will be deleted immediately."
     notify_users_after_responses_deleted_on_flagged_post: "When a post is flagged and then removed, all users that responded to the post and had their responses removed will be notified."
-    max_image_width: "Maximum thumbnail width of images in a post"
-    max_image_height: "Maximum thumbnail height of images in a post"
+    max_image_width: "Maximum thumbnail width of images in a post. Images with a larger width will be resized and lightboxed."
+    max_image_height: "Maximum thumbnail height of images in a post. Images with a larger height will be resized and lightboxed."
     responsive_post_image_sizes: "Resize lightbox preview images to allow for high DPI screens of the following pixel ratios. Remove all values to disable responsive images."
     fixed_category_positions: "If checked, you will be able to arrange categories into a fixed order. If unchecked, categories are listed in order of activity."
     fixed_category_positions_on_create: "If checked, category ordering will be maintained on topic creation dialog (requires fixed_category_positions)."