diff --git a/perl-xCAT/xCAT/data/discinfo.pm b/perl-xCAT/xCAT/data/discinfo.pm
index aeec54eac..51006028e 100644
--- a/perl-xCAT/xCAT/data/discinfo.pm
+++ b/perl-xCAT/xCAT/data/discinfo.pm
@@ -16,6 +16,7 @@ require Exporter;
                  "1310229985.226287" => "centos6",
 		 "1323560292.885204" => "centos6.2",
 		 "1341569670.539525" => "centos6.3",#x86
+		 "1362445555.957609" => "centos6.4",#x86_64
                  "1176234647.982657" => "centos5",
                  "1156364963.862322" => "centos4.4",
                  "1178480581.024704" => "centos4.5",