diff --git a/lib/Lacuna/DB/Result/Building/Trade.pm b/lib/Lacuna/DB/Result/Building/Trade.pm
index 9d7a7599..47b82907 100644
--- a/lib/Lacuna/DB/Result/Building/Trade.pm
+++ b/lib/Lacuna/DB/Result/Building/Trade.pm
@@ -209,7 +209,7 @@ sub remove_waste_chain {
 
 sub remove_supply_chain {
     my ($self, $supply_chain) = @_;
-    if ($self->supply_chain->count == 1) {
+    if ($self->supply_chains->count == 1) {
         my $ships = $self->supply_ships;
         while (my $ship = $ships->next) {
             $self->sent_supply_ship_home($supply_chain->target, $ship);
diff --git a/lib/Lacuna/RPC/Building/Trade.pm b/lib/Lacuna/RPC/Building/Trade.pm
index de38cd32..efc59d8a 100644
--- a/lib/Lacuna/RPC/Building/Trade.pm
+++ b/lib/Lacuna/RPC/Building/Trade.pm
@@ -256,7 +256,7 @@ sub delete_supply_chain {
 
     my $chain = Lacuna->db->resultset('Lacuna::DB::Result::SupplyChain')->find($supply_chain_id);
     if ($chain) {
-        $chain->delete;
+        $chain->remove_supply_chain;
     }
     return $self->view_supply_chains($session_id, $building_id);    
 }