diff --git a/.gitignore b/.gitignore
index ad956cd..bbfb942 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,7 +14,7 @@
 # mac
 *.DS_Store
 .bashrc
-
+public/sync_failed_users.dic
 # Ignore all logfiles and tempfiles.
 /log/*
 /tmp/*
diff --git a/app/jobs/sync_forge_job.rb b/app/jobs/sync_forge_job.rb
index fdfa595..aa649a5 100644
--- a/app/jobs/sync_forge_job.rb
+++ b/app/jobs/sync_forge_job.rb
@@ -96,7 +96,7 @@ class SyncForgeJob < ApplicationJob
         new_user
       rescue Exception => e
         failed_dic = "public/sync_failed_users.dic"
-        File.open(failed_dic,"a+") do |file|
+        File.open(failed_dic,"a") do |file|
           file.puts "[\nTime---#{Time.now}\nuser_info---#{owner_params}\nerrors--#{e}]\n "
         end
       end