diff --git a/app/models/exchange.rb b/app/models/exchange.rb
index f945898402..4657f92946 100644
--- a/app/models/exchange.rb
+++ b/app/models/exchange.rb
@@ -122,6 +122,8 @@ class Exchange < ApplicationRecord
   end
 
   def delete_related_exchange_variants
+    return unless incoming?
+
     ExchangeVariant.where(variant_id: variant_ids).
       joins(:exchange).
       where(exchanges: { order_cycle: order_cycle, incoming: false }).
diff --git a/app/models/exchange_variant.rb b/app/models/exchange_variant.rb
index ca3169bde8..a3dfc01a40 100644
--- a/app/models/exchange_variant.rb
+++ b/app/models/exchange_variant.rb
@@ -7,6 +7,8 @@ class ExchangeVariant < ApplicationRecord
   after_destroy :delete_related_outgoing_variants
 
   def delete_related_outgoing_variants
+    return unless exchange.incoming?
+
     ExchangeVariant.where(variant_id: variant_id).
       joins(:exchange).
       where(exchanges: { order_cycle: exchange.order_cycle, incoming: false }).