diff --git a/src/events/README.md b/src/events/README.md
index c193fc5..223c865 100644
--- a/src/events/README.md
+++ b/src/events/README.md
@@ -1,4 +1,3 @@
 # events
 
 This directory is used to store the code for event handle. You can visit [GitHub documents](https://docs.github.com/en/free-pro-team@latest/developers/webhooks-and-events/webhook-events-and-payloads) to learn about different webhook events.
-
diff --git a/src/events/app/index.ts b/src/events/app/index.ts
index 529ce8e..0bdd58e 100644
--- a/src/events/app/index.ts
+++ b/src/events/app/index.ts
@@ -195,10 +195,10 @@ async function handleSyncRepo(
     commentService
   )
     .then(() => {
-      log.info("Finish syncing pull request of %s", repoSignature);
+      log.info("Finish syncing pull requests of %s", repoSignature);
     })
     .catch((err) => {
-      log.error(err, "Failed to sync pull request of %s", repoSignature);
+      log.error(err, "Failed to sync pull requests of %s", repoSignature);
     });
 
   const syncIssuePromise = handleSyncIssues(
@@ -209,10 +209,10 @@ async function handleSyncRepo(
     commentService
   )
     .then(() => {
-      log.info("Finish syncing issue of %s", repoSignature);
+      log.info("Finish syncing issues of %s", repoSignature);
     })
     .catch((err) => {
-      log.error(err, "Failed to sync issue of %s", repoSignature);
+      log.error(err, "Failed to sync issues of %s", repoSignature);
     });
 
   // Sync pull and sync issue proceed concurrently.
@@ -320,7 +320,7 @@ async function handleSyncIssues(
   const { owner, repo } = repoKey;
   const repoSignature = `${owner}/${repo}`;
 
-  log.info("Syncing issue from %s", repoSignature);
+  log.info("Syncing issues from %s", repoSignature);
 
   // Load issues in pagination mode.
   const issueIterator = github.paginate.iterator(github.issues.listForRepo, {
diff --git a/src/index.ts b/src/index.ts
index 4c2972e..0ef3b81 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -51,7 +51,7 @@ export = async (app: Probot) => {
         Container.get(IContributorServiceToken)
       )
         .then(() => {
-          app.log.info("Finish full sync successfully");
+          app.log.info("Finish full sync success");
         })
         .catch((err) => {
           app.log.error(err, "Failed to finish full sync");