diff --git a/xCAT-server/lib/xcat/plugins/openbmc.pm b/xCAT-server/lib/xcat/plugins/openbmc.pm
index 21f52c628..f44863172 100644
--- a/xCAT-server/lib/xcat/plugins/openbmc.pm
+++ b/xCAT-server/lib/xcat/plugins/openbmc.pm
@@ -1101,7 +1101,7 @@ sub get_functional_software_ids {
     #
     if (${ $response->{data} }{'/xyz/openbmc_project/software/functional'} ) { 
         my %func_data = %{ ${ $response->{data} }{'/xyz/openbmc_project/software/functional'} };
-        foreach my $fw_idx (keys $func_data{endpoints}) {
+        foreach my $fw_idx (keys %{ $func_data{endpoints} }) {
             my $fw_id = (split(/\//, $func_data{endpoints}[$fw_idx]))[-1];
             $functional{$fw_id} = 1;
         }