diff --git a/src/sync/hashtriemap.go b/src/sync/hashtriemap.go
index 8df0e2b567..ce30f590bb 100644
--- a/src/sync/hashtriemap.go
+++ b/src/sync/hashtriemap.go
@@ -74,6 +74,7 @@ func (m *Map) LoadAndDelete(key any) (value any, loaded bool) {
 }
 
 // Delete deletes the value for a key.
+// If the key is not in the map, Delete does nothing.
 func (m *Map) Delete(key any) {
 	m.m.Delete(key)
 }