diff --git a/lib/tasks/batch_add_contributors.rake b/lib/tasks/batch_add_contributors.rake
index 4da743434..e1a5c44e6 100644
--- a/lib/tasks/batch_add_contributors.rake
+++ b/lib/tasks/batch_add_contributors.rake
@@ -1,5 +1,5 @@
 namespace :batch_add_contributors do
-  desc "commit_log_to_db"
+  desc "batch_add_contributors"
   task done: :environment do
     puts "project_id=================#{ENV['project_id']}"
     return if ENV['project_id'].blank?
@@ -42,7 +42,7 @@ namespace :batch_add_contributors do
           sql_connection = ActiveRecord::Base.connection
           sql_connection.begin_db_transaction
           if Issue.find_by_sql("select id from commit_contributors where name='#{commiter['email']}'").present?
-            sql = "update commit_contributors set created_at ='#{}' where name='#{commiter['email']}'"
+            sql = "update commit_contributors set created_at ='#{commit_date_str}' where name='#{commiter['email']}'"
           else
             sql = "INSERT INTO commit_contributors (`created_at`, `count`, `name`) VALUES ('#{commit_date_str}',1,'#{commiter['email']}')"
           end
@@ -92,7 +92,7 @@ namespace :batch_add_contributors do
       sql_connection = ActiveRecord::Base.connection
       sql_connection.begin_db_transaction
       if Issue.find_by_sql("select id from commit_contributors where name='#{commiter['email']}'").present?
-        sql = "update commit_contributors set created_at ='#{}' where name='#{commiter['email']}'"
+        sql = "update commit_contributors set created_at ='#{commit_date_str}' where name='#{commiter['email']}'"
       else
         sql = "INSERT INTO commit_contributors (`created_at`, `count`, `name`) VALUES ('#{commit_date_str}',1,'#{commiter['email']}')"
       end