diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index a559fda56..e6683d024 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.23.21",
+    "version": "2.23.22",
     "bin": "bin/hydrooj.js",
     "main": "dist/loader.js",
     "typings": "dist/loader.d.ts",
diff --git a/packages/hydrooj/src/handler/discussion.ts b/packages/hydrooj/src/handler/discussion.ts
index c2eb9c2bf..1beccc375 100644
--- a/packages/hydrooj/src/handler/discussion.ts
+++ b/packages/hydrooj/src/handler/discussion.ts
@@ -1,9 +1,7 @@
 import { ObjectID } from 'mongodb';
 import { isSafeInteger } from 'lodash';
 import { DiscussionNotFoundError, DocumentNotFoundError, PermissionError } from '../error';
-import {
-    Mdoc, Drdoc, Ddoc, Drrdoc,
-} from '../interface';
+import { Drdoc, Ddoc, Drrdoc } from '../interface';
 import paginate from '../lib/paginate';
 import * as system from '../model/system';
 import user from '../model/user';
@@ -215,16 +213,13 @@ class DiscussionDetailHandler extends DiscussionHandler {
         this.checkPerm(PERM.PERM_REPLY_DISCUSSION);
         await this.limitRate('add_discussion', 3600, 60);
         // Notify related users
-        const replies: Drdoc[] = await discussion.getMultiReply(domainId, did).toArray();
-        const uids = Array.from(new Set(replies.map((drdoc) => drdoc.owner)));
-        const tasks = uids.map((uid) => {
-            if (uid !== this.user._id) {
-                return message.send(1, uid, `Discussion update: ${domainId} ${did}`);
-            }
-            return Promise.resolve(null as Mdoc);
-        });
-        await Promise.all(tasks);
         await discussion.addReply(domainId, did, this.user._id, content, this.request.ip);
+        const replies: Drdoc[] = await discussion.getMultiReply(domainId, did).toArray();
+        const uids = new Set(replies.map((drdoc) => drdoc.owner));
+        uids.delete(this.user._id);
+        const str = JSON.stringify({ message: '{0} replied to discussion {1}{2}.', params: [this.user._id, domainId, did] });
+        const tasks = Array.from(uids).map((uid) => message.send(1, uid, str));
+        await Promise.all(tasks);
         this.back();
     }
 
@@ -234,6 +229,8 @@ class DiscussionDetailHandler extends DiscussionHandler {
         this.checkPerm(PERM.PERM_REPLY_DISCUSSION);
         await this.limitRate('add_discussion', 3600, 60);
         await discussion.addTailReply(domainId, drid, this.user._id, content, this.request.ip);
+        const str = JSON.stringify({ message: '{0} replied to discussion reply {1}{2}.', params: [this.user._id, domainId, drid] });
+        if (this.drdoc.owner !== this.user._id) await message.send(1, this.drdoc.owner, str);
         this.back();
     }
 
diff --git a/packages/hydrooj/src/service/server.ts b/packages/hydrooj/src/service/server.ts
index d68f4163f..c88ce2da9 100644
--- a/packages/hydrooj/src/service/server.ts
+++ b/packages/hydrooj/src/service/server.ts
@@ -344,11 +344,11 @@ export class HandlerCommon {
         const query: any = {};
         for (const key in kwargs) {
             if (kwargs[key] instanceof ObjectID) args[key] = kwargs[key].toHexString();
-            else args[key] = kwargs[key].toString();
+            else args[key] = encodeURIComponent(kwargs[key].toString());
         }
         for (const key in kwargs.query || {}) {
             if (query[key] instanceof ObjectID) query[key] = kwargs.query[key].toHexString();
-            else query[key] = kwargs.query[key].toString();
+            else query[key] = encodeURIComponent(kwargs.query[key].toString());
         }
         try {
             const { anchor } = args;
diff --git a/packages/ui-default/templates/problem_detail.html b/packages/ui-default/templates/problem_detail.html
index 114271b51..fc171e02d 100644
--- a/packages/ui-default/templates/problem_detail.html
+++ b/packages/ui-default/templates/problem_detail.html
@@ -29,7 +29,7 @@
             <h1 class="section__title scratchpad--hide">
                 <span class="icon record-status--icon {{ model.builtin.STATUS_CODES[rdoc['status']] }}"></span>
                 <span class="record-status--text {{ model.builtin.STATUS_CODES[rdoc['status']] }}">
-                  {{ 'Accepted' if rdoc.status == model.builtin.STATUS.STATUS_ACCEPTED else rdoc.score }}
+                  {{ model.builtin.STATUS_TEXTS[rdoc.status] }}{% if rdoc.status != model.builtin.STATUS.STATUS_ACCEPTED %} {{ rdoc.score }}{% endif %}
                 </span>
             </h1>
           {% endif %}