diff --git a/api/lightning/node.py b/api/lightning/node.py
index 54658f4a..9ed84b70 100644
--- a/api/lightning/node.py
+++ b/api/lightning/node.py
@@ -521,11 +521,11 @@ class LNNode:
                 )
                 order.save()
                 print(
-                    f"Order: {order.id} FAILED. Hash: {hash} Reason: {LNNode.payment_failure_context[response.failure_reason]}"
+                    f"Order: {order.id} FAILED. Hash: {hash} Reason: {cls.payment_failure_context[response.failure_reason]}"
                 )
                 return {
                     "succeded": False,
-                    "context": f"payment failure reason: {LNNode.payment_failure_context[response.failure_reason]}",
+                    "context": f"payment failure reason: {cls.payment_failure_context[response.failure_reason]}",
                 }
 
             if response.status == 2:  # Status 2 'SUCCEEDED'