diff --git a/transaction.go b/transaction.go
index b6e40df24..299d3d134 100644
--- a/transaction.go
+++ b/transaction.go
@@ -42,7 +42,7 @@ type Transaction struct {
 	// Timeout is the minimum idle time for which this transaction should continue to exist.
 	Timeout time.Duration `json:"timeout"`
 
-	// Deadline is calculated from Timeout, and will be reset each
+	// Deadline is calculated from Timeout. TODO reset deadline each time there is activity on the transaction. (we can't do this until there is some method of associating a request/call with a transaction)
 	// time there is activity on the transaction.
 	Deadline time.Time `json:"deadline"`