diff --git a/perl-xCAT/xCAT/NetworkUtils.pm b/perl-xCAT/xCAT/NetworkUtils.pm
index 339b6add4..2a115b26d 100755
--- a/perl-xCAT/xCAT/NetworkUtils.pm
+++ b/perl-xCAT/xCAT/NetworkUtils.pm
@@ -2211,6 +2211,26 @@ sub isValidHostname
     return 0;
 }
 
+#-------------------------------------------------------------------------------
+
+=head3 isValidFQDN
+      Description : Validate whether specified string is a valid FQDN.
+      Arguments   : hostname - the string to be validated.
+      Returns     : 1 - valid hostname FQDN.
+                    0 - invalid hostname FQDN.
+=cut
+
+#-------------------------------------------------------------------------------
+sub isValidFQDN
+{
+    my ($class, $hostname) = @_;
+    if ($hostname =~ /^[\-\.a-zA-Z0-9]+$/){
+        return 1;
+    }
+    return 0;
+}
+
+
 #-------------------------------------------------------------------------------
 
 =head3 ip_to_int
diff --git a/xCAT-server/lib/xcat/plugins/profilednodes.pm b/xCAT-server/lib/xcat/plugins/profilednodes.pm
index e2d221e6f..574400262 100644
--- a/xCAT-server/lib/xcat/plugins/profilednodes.pm
+++ b/xCAT-server/lib/xcat/plugins/profilednodes.pm
@@ -603,7 +603,7 @@ Usage:
         setrsp_errormsg("Specified hostname $args_dict{'hostname'} conflicts with records in database");
         return;
     }
-    if (! xCAT::NetworkUtils->isValidHostname($args_dict{'hostname'})){
+    if (! xCAT::NetworkUtils->isValidFQDN($args_dict{'hostname'})){
         setrsp_errormsg("Specified hostname: $args_dict{'hostname'} is invalid");
         return;
     }