diff --git a/mysql_backup.sh b/mysql_backup.sh
index 71cd2bc..b9975e7 100755
--- a/mysql_backup.sh
+++ b/mysql_backup.sh
@@ -163,7 +163,7 @@ else
             echo "Compressing dump by xz (`date +\"%H:%M:%S\"`)..." ;
         fi
 
-        xz ${dump_file_name} ;
+        xz -T2 ${dump_file_name} ;
     fi
 fi