diff --git a/zmldapsync/zmldapsync.pl b/zmldapsync/zmldapsync.pl
index c27c072..6169d6a 100644
--- a/zmldapsync/zmldapsync.pl
+++ b/zmldapsync/zmldapsync.pl
@@ -295,8 +295,7 @@ DOMAIN: foreach my $domain ( keys $conf->{domains} ) {
 
   log_verbose( "Comparing the accounts" );
 
-  my $single = map { $conf->{domains}->{$domain}->{users}->{attr_map}->{$_} }
-               keys $conf->{domains}->{$domain}->{users}->{attr_map};
+  my @single = keys $conf->{domains}->{$domain}->{users}->{attr_map};
   push @single, $conf->{domains}->{$domain}->{users}->{mail_attr};
   my $ext_users = ldap2hashref(
     $ext_user_search,
@@ -502,8 +501,7 @@ DOMAIN: foreach my $domain ( keys $conf->{domains} ) {
 	         " distribution list(s) in Zimbra" );
     log_verbose( "Comparing groups with distribution lists" );
 
-    my @single = map { $conf->{domains}->{$domain}->{groups}->{attr_map}->{$_} }
-            keys $conf->{domains}->{$domain}->{groups}->{attr_map};
+    my @single = keys $conf->{domains}->{$domain}->{groups}->{attr_map};
     push @single, $conf->{domains}->{$domain}->{groups}->{mail_attr};
 
     my $ext_groups = ldap2hashref(