diff --git a/src/modules/pull_request/replyInvalidTitle.js b/src/modules/pull_request/replyInvalidTitle.js
index 1e01e1d..1e2fc9b 100644
--- a/src/modules/pull_request/replyInvalidTitle.js
+++ b/src/modules/pull_request/replyInvalidTitle.js
@@ -43,8 +43,7 @@ module.exports = on => {
     })
 
     on('pull_request_edited', async ({ payload, repo }) => {
-      if (match(payload.pull_request.title)) {
-        await pullRequestHasLabel(payload, 'invalid')
+      if (match(payload.pull_request.title) && await pullRequestHasLabel(payload, 'invalid')) {
         commentPullRequest(
           payload,
           format(commentSuccess, {
diff --git a/src/modules/pull_request/titlePrefixToLabel.js b/src/modules/pull_request/titlePrefixToLabel.js
index 57d7c09..dbf54d2 100644
--- a/src/modules/pull_request/titlePrefixToLabel.js
+++ b/src/modules/pull_request/titlePrefixToLabel.js
@@ -18,13 +18,13 @@ const ACTION_TO_LABEL_MAP = {
   docs: 'document'
 }
 
-const handle = ({ payload, repo }) => {
+const handle = async ({ payload, repo }) => {
   const action = getAction(payload.pull_request.title)
-
   if (action && ACTION_TO_LABEL_MAP[action]) {
-    pullRequestHasLabel(payload, ACTION_TO_LABEL_MAP[action]).catch(() => {
+    const exist = await pullRequestHasLabel(payload, ACTION_TO_LABEL_MAP[action])
+    if (!exist) {
       addLabelsToPullRequest(payload, ACTION_TO_LABEL_MAP[action])
-    })
+    }
   }
 }
 
diff --git a/src/modules/releases/autoReleaseNote.js b/src/modules/releases/autoReleaseNote.js
index c6b44d5..d79b79a 100644
--- a/src/modules/releases/autoReleaseNote.js
+++ b/src/modules/releases/autoReleaseNote.js
@@ -18,77 +18,73 @@ module.exports = on => {
       tag_name: payload.ref
     })
     // 如果该 tag 存在则直接返回
-    if (tag !== false) {
+    if (tag !== null) {
       return
     }
 
-    // 创建 release note
-    try {
-      const tags = await getTags(payload)
-      const head = tags[0].name
-      const base = tags.length > 1 ? tags[1].name : tags[0].name
+    const tags = await getTags(payload)
 
-      const commitsLog = await compareCommits(payload, {
-        base,
-        head
-      })
+    // 如果只有一个 tag 则没法对比，忽略
+    if (tags.length < 2) {
+      return
+    }
 
-      const commits = commitsLog.commits
-      const changes = Object.keys(RELEASE_CHANGE_MAP).map(title => {
-        let data = []
-        commits.map((commit) => {
-          if (commit.commit.message.indexOf(`${RELEASE_CHANGE_MAP[title]}:`) === 0) {
+    const head = tags[0].name
+    const base = tags[1].name
+
+    const commitsLog = await compareCommits(payload, {
+      base,
+      head
+    })
+
+    const commits = commitsLog.commits
+    const changes = Object.keys(RELEASE_CHANGE_MAP).map(title => {
+      return {
+        title,
+        data: commits
+          .filter((commit) => commit.commit.message.indexOf(`${RELEASE_CHANGE_MAP[title]}:`) === 0)
+          .map((commit) => {
             let message = commit.commit.message
             // 处理 squash merge 的 commit message
-            // 后期看看有没有更好的解决办法？
             if (message.indexOf('\n') !== -1) {
               message = message.substr(0, message.indexOf('\n'))
             }
-            data.push(`- ${message}, by @${commit.commit.author.name} <<${commit.commit.author.email}>>`)
-          }
-        })
-        return {
-          title,
-          data
-        }
-      }).filter(v => v.data.length)
+            return `- ${message}, by @${commit.author.login} <<${commit.commit.author.email}>>`
+          })
+      }
+    }).filter(v => v.data.length)
 
-      const hashChanges = commits.map((commit) => {
-        let message = commit.commit.message
-        // 处理 squash merge 的 commit message
-        if (message.indexOf('\n') !== -1) {
-          message = message.substr(0, message.indexOf('\n'))
-        }
-        return `- [${commit.sha.substr(0, 7)}](${commit.html_url}) - ${message}, by @${commit.commit.author.name} <<${commit.commit.author.email}>>`
+    const hashChanges = commits.map((commit) => {
+      let message = commit.commit.message
+      // 处理 squash merge 的 commit message
+      if (message.indexOf('\n') !== -1) {
+        message = message.substr(0, message.indexOf('\n'))
+      }
+      return `- [${commit.sha.substr(0, 7)}](${commit.html_url}) - ${message}, by @${commit.author.login} <<${commit.commit.author.email}>>`
+    })
+
+    let body = []
+
+    if (changes.length) {
+      body.push('## Notable changes\n')
+      changes.forEach(v => {
+        body.push(`- ${v.title}`)
+
+        v.data.forEach(line => body.push('     ' + line))
       })
+    }
 
-      let body = []
+    if (hashChanges.length) {
+      body.push('\n## Commits\n')
+      body = body.concat(hashChanges)
+    }
 
-      if (changes.length) {
-        body.push('## Notable changes\n')
-        changes.forEach(v => {
-          body.push([
-            `- ${v.title}`
-          ])
-
-          v.data.forEach(line => body.push('     ' + line))
-        })
-      }
-
-      if (hashChanges.length) {
-        body.push('\n## Commits\n')
-        body = body.concat(hashChanges)
-      }
-
-      if (body.length) {
-        createRelease(payload, {
-          tag_name: payload.ref,
-          name: `${payload.ref} @${payload.repository.owner.login}`,
-          body: body.join('\n')
-        })
-      }
-    } catch (err) {
-      console.error(err)
+    if (body.length) {
+      createRelease(payload, {
+        tag_name: payload.ref,
+        name: `${payload.ref} @${payload.repository.owner.login}`,
+        body: body.join('\n')
+      })
     }
   })
 }