diff --git a/back/services/cron.ts b/back/services/cron.ts
index ddec21ec..5644a227 100644
--- a/back/services/cron.ts
+++ b/back/services/cron.ts
@@ -241,19 +241,19 @@ export default class CronService {
   }
 
   private async killTask(name: string) {
-    let taskCommond = `ps -ef | grep "${name}" | grep -v grep | awk '{print $1}'`;
+    let taskCommand = `ps -ef | grep "${name}" | grep -v grep | awk '{print $1}'`;
     const execAsync = promisify(exec);
     try {
-      let pid = (await execAsync(taskCommond)).stdout;
+      let pid = (await execAsync(taskCommand)).stdout;
       if (pid) {
         pid = (await execAsync(`pstree -p ${pid}`)).stdout;
       } else {
         return;
       }
-      const pids = pid.match(/\d+/g);
+      const pids = pid.match(/\(\d+/g);
       const killLogs = [];
       for (const id of pids) {
-        const c = `kill -9 ${id}`;
+        const c = `kill -9 ${id.slice(1)}`;
         const { stdout, stderr } = await execAsync(c);
         if (stderr) {
           killLogs.push(stderr);