diff --git a/app/models/key_pair.rb b/app/models/key_pair.rb
index ca8a3fe8c..e6bb7a246 100644
--- a/app/models/key_pair.rb
+++ b/app/models/key_pair.rb
@@ -21,9 +21,7 @@ class KeyPair < ActiveRecord::Base
   protected
 
     def check_keys
-      tmp = "#{APP_CONFIG['root_path']}/tmp"
-      system "sudo chown `whoami` #{tmp} && chmod 1777 #{tmp}"
-      dir = Dir.mktmpdir('keys-', tmp)
+      dir = Dir.mktmpdir('keys-', '/tmp')
       begin
         %w(pubring secring).each do |kind|
           filename = "#{dir}/#{kind}"
diff --git a/app/models/ssh_key.rb b/app/models/ssh_key.rb
index a2c615585..ec09df1ce 100644
--- a/app/models/ssh_key.rb
+++ b/app/models/ssh_key.rb
@@ -22,7 +22,7 @@ class SshKey < ActiveRecord::Base
   def set_fingerprint
     return false unless key
 
-    file = Tempfile.new('key_file', "#{APP_CONFIG['root_path']}/tmp")
+    file = Tempfile.new('key_file', '/tmp')
     filename = file.path
     begin
       file.puts key