diff --git a/container_option.go b/container_option.go
index a5df7ad..3a06a19 100644
--- a/container_option.go
+++ b/container_option.go
@@ -100,6 +100,7 @@
 }
 
 // ForceAutoRefresh force auto refresh even if output is not terminal.
+// Applicable only if not WithManualRefresh set.
 // Useful for testing purposes.
 func ForceAutoRefresh() ContainerOption {
 	return func(s *pState) {