diff --git a/lib/App/Netdisco/Worker/Plugin/Macsuck/Nodes.pm b/lib/App/Netdisco/Worker/Plugin/Macsuck/Nodes.pm
index 1ec3af17..f55e3ed5 100644
--- a/lib/App/Netdisco/Worker/Plugin/Macsuck/Nodes.pm
+++ b/lib/App/Netdisco/Worker/Plugin/Macsuck/Nodes.pm
@@ -443,7 +443,7 @@ sub walk_fwtable {
       # possibly move node to lag master
       if (defined $device_port->slave_of
             and exists $device_ports->{$device_port->slave_of}) {
-          $parent = $device_port->slave_of;
+          my $parent = $device_port->slave_of;
           $device_ports->{$parent}->update({is_uplink => \'true'});
 
           # VLAN subinterfaces can be set uplink,