diff --git a/CHANGELOG.md b/CHANGELOG.md
index b32b43b5d..4164a17a7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## Next release
 
+- Fix a bug: unable to cancel a PayZen subscription
+
 ## v6.3.38 2025 January 27
 
 - Fix a bug: unable to update product low stock alert
diff --git a/lib/pay_zen/service.rb b/lib/pay_zen/service.rb
index e9597af0f..6803fdd56 100644
--- a/lib/pay_zen/service.rb
+++ b/lib/pay_zen/service.rb
@@ -70,7 +70,8 @@ class PayZen::Service < Payment::Service
         raise "Cannot cancel transaction #{t['uuid']}" unless tr_res['answer']['detailedStatus'] == 'CANCELLED'
       end
     rescue PayzenError => e
-      raise e unless e.details['errorCode'] == 'PSP_010' # ignore if no order
+      # ignore if no order found and Subscription already canceled.
+      raise e unless e.details['errorCode'] == 'PSP_010' || e.details['errorCode'] == 'PSP_1099'
     end
 
     # then, we cancel the subscription