diff --git a/sdk/apis/scheduling/v1alpha1/types_location.go b/sdk/apis/scheduling/v1alpha1/types_location.go
index 1b7cf4f964f..d69211d31f1 100644
--- a/sdk/apis/scheduling/v1alpha1/types_location.go
+++ b/sdk/apis/scheduling/v1alpha1/types_location.go
@@ -25,7 +25,8 @@ const (
 	// representation of the location labels in order to use them in a table column in the CLI.
 	LocationLabelsStringAnnotationKey = "scheduling.kcp.io/labels"
 
-	// PlacementAnnotationKey is the label key for the label holding a PlacementAnnotation struct.
+	// PlacementAnnotationKey is the label key for a namespace that indicates the namespace's labels match the selector
+	// in at least one ready Placement.
 	PlacementAnnotationKey = "scheduling.kcp.io/placement"
 )