diff --git a/public/s/js/sidebar-activity.js b/public/s/js/sidebar-activity.js
index d5470af..e76b2ae 100644
--- a/public/s/js/sidebar-activity.js
+++ b/public/s/js/sidebar-activity.js
@@ -129,7 +129,7 @@
             const hostsRegexPart = allowedHosts.join('|');
             // "Safe non-whitespace" stops at protocol boundaries so concatenated URLs aren't merged.
             const safeS = `(?:(?!https?:\\/\\/)\\S)`;
-            const domainOrRelative = `(?:(?:https?:\\/\\/|\\/\\/)?(?:${hostsRegexPart})|(?<!\\S)(?=\\/[a-zA-Z0-9_\\-]))`;
+            const domainOrRelative = `(?:(?:https?:\\/\\/|\\/\\/)?(?:${hostsRegexPart})|(?:(?<!\\S)|(?<=\\]))(?=\\/[a-zA-Z0-9_\\-]))`;
             const imageRegex = new RegExp(`(?<![\\(\\[])(${domainOrRelative}(?:\\/${safeS}+\\.(?:jpg|jpeg|png|gif|webp)(?:\\?${safeS}+)?))(?![\\)\\]])`, 'gi');
             const rawVideoRegex = new RegExp(`(?<![\\(\\[])(${domainOrRelative}(?:\\/[^\\s\\[\\]\\(\\)]*\\.(?:mp4|webm|ogv|mov)(?:\\?[^\\s\\[\\]\\(\\)]+)?(?:#gif)?))`, 'gi');
             const mentionRegex = /(?<!\[)@([a-zA-Z0-9_\-\.]+)(?!\])|\[@([^\]]+)\]/g;