diff --git a/templates/repo/cloudbrain/new.tmpl b/templates/repo/cloudbrain/new.tmpl
index f108f5a5f..ec4495bd7 100755
--- a/templates/repo/cloudbrain/new.tmpl
+++ b/templates/repo/cloudbrain/new.tmpl
@@ -259,7 +259,7 @@
         let value_task = $("input[name='job_name']").val()
         let value_image = $("input[name='image']").val()
         let value_data = $("input[name='attachment']").val()
-        let re = /^[a-z0-9][a-z0-9-_]{1,35}[^_]$/
+        let re = /^[a-z0-9][a-z0-9-_]{1,34}[a-z0-9-]$/
         let flag = re.test(value_task)
         if(!flag){
             $('#messageInfo').css('display','block')