diff --git a/core/src/qos_service.rs b/core/src/qos_service.rs
index 143382100..4865108f8 100644
--- a/core/src/qos_service.rs
+++ b/core/src/qos_service.rs
@@ -31,7 +31,7 @@ pub enum QosMetrics {
 // QosService is local to each banking thread, each instance of QosService provides services to
 // one banking thread.
 // It hosts a private thread for async metrics reporting, tagged with banking threads ID. Banking
-// thread calls `report_metrics(slot)` at end of `process_and_record_tramsaction()`, or any time
+// thread calls `report_metrics(slot)` at end of `process_and_record_transaction()`, or any time
 // it wants, QosService sends `slot` to reporting thread via channel, signalling stats to be
 // reported if new bank slot has changed.
 //