diff --git a/packages/sonic/model.ts b/packages/sonic/model.ts
index a8b60ef8..a3c8f9e4 100644
--- a/packages/sonic/model.ts
+++ b/packages/sonic/model.ts
@@ -8,7 +8,7 @@ bus.on('problem/add', async (doc, docId) => {
     const tasks = [];
     for (const domainId of [doc.domainId, ...union.map((i) => i._id)]) {
         tasks.push(
-            sonic.push('problem', `${domainId}@title`, `${doc.domainId}/${docId}`, doc.title),
+            sonic.push('problem', `${domainId}@title`, `${doc.domainId}/${docId}`, `${doc.pid || ''} ${doc.title}`),
             sonic.push('problem', `${domainId}@content`, `${doc.domainId}/${docId}`, doc.content.toString()),
         );
     }
@@ -22,7 +22,7 @@ bus.on('problem/edit', async (pdoc) => {
     for (const domainId of [pdoc.domainId, ...union.map((i) => i._id)]) {
         tasks.push(
             sonic.flusho('problem', `${domainId}@title`, id)
-                .then(() => sonic.push('problem', `${domainId}@title`, id, pdoc.title)),
+                .then(() => sonic.push('problem', `${domainId}@title`, id, `${pdoc.pid || ''} ${pdoc.title}`)),
             sonic.flusho('problem', `${domainId}@content`, id)
                 .then(() => sonic.push('problem', `${domainId}@content`, id, pdoc.content.toString())),
         );
diff --git a/packages/sonic/package.json b/packages/sonic/package.json
index 5765f648..d8d5b0b0 100644
--- a/packages/sonic/package.json
+++ b/packages/sonic/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@hydrooj/sonic",
-    "version": "1.2.1",
+    "version": "1.2.2",
     "description": "Sonic search service",
     "main": "service.js",
     "typings": "service.d.ts",
diff --git a/packages/sonic/script.ts b/packages/sonic/script.ts
index 57e69baf..8c139ddd 100644
--- a/packages/sonic/script.ts
+++ b/packages/sonic/script.ts
@@ -15,7 +15,7 @@ export async function run({ domainId }, report) {
         const tasks = [];
         for (const did of [pdoc.domainId, ...union.map((j) => j._id)]) {
             tasks.push(
-                pdoc.title && sonic.push('problem', `${did}@title`, `${pdoc.domainId}/${pdoc.docId}`, pdoc.title),
+                pdoc.title && sonic.push('problem', `${did}@title`, `${pdoc.domainId}/${pdoc.docId}`, `${pdoc.pid || ''} ${pdoc.title}`),
                 pdoc.content.toString() && sonic.push('problem', `${did}@content`, `${pdoc.domainId}/${pdoc.docId}`, pdoc.content.toString()),
             );
         }