diff --git a/providers/ark.rb b/providers/ark.rb
index 5a24b179..6ac7042a 100644
--- a/providers/ark.rb
+++ b/providers/ark.rb
@@ -54,7 +54,7 @@ def oracle_downloaded?(download_path, new_resource)
     require 'digest'
     if new_resource.checksum =~ /^[0-9a-f]{32}$/
       downloaded_sha =  Digest::MD5.file(download_path).hexdigest
-      downloaded_sha == new_resource.md5 
+      downloaded_sha == new_resource.checksum
     else
       downloaded_sha =  Digest::SHA256.file(download_path).hexdigest
       downloaded_sha == new_resource.checksum
@@ -151,7 +151,7 @@ def download_direct_from_oracle(tarball_name, new_resource)
          end
        when /^.*\.(tar.gz|tgz)/
          cmd = shell_out(
-                            %Q[ tar xvzf "#{Chef::Config[:file_cache_path]}/#{tarball_name}" -C "#{Chef::Config[:file_cache_path]}" ]
+                            %Q[ tar xvzf "#{Chef::Config[:file_cache_path]}/#{tarball_name}" -C "#{Chef::Config[:file_cache_path]}" "--no-same-owner" ]
                                   )
          unless cmd.exitstatus == 0
            Chef::Application.fatal!("Failed to extract file #{tarball_name}!")