diff --git a/src/Blockcore.Indexer.Core/Client/BitcoinClientException.cs b/src/Blockcore.Indexer.Core/Client/BitcoinClientException.cs
index 6b0ed16..d77e071 100644
--- a/src/Blockcore.Indexer.Core/Client/BitcoinClientException.cs
+++ b/src/Blockcore.Indexer.Core/Client/BitcoinClientException.cs
@@ -81,6 +81,10 @@ public bool IsTransactionNotFound()
                return true;
             }
 
+            if (ErrorMessage.Contains("No such mempool transaction"))
+            {
+               return true;
+            }
          }
 
          return false;