diff --git a/pkg/controller/deployment/sync.go b/pkg/controller/deployment/sync.go
index ce770321110..c58ccab4111 100644
--- a/pkg/controller/deployment/sync.go
+++ b/pkg/controller/deployment/sync.go
@@ -525,7 +525,6 @@ func calculateStatus(allRSs []*apps.ReplicaSet, newRS *apps.ReplicaSet, deployme
 // by looking at the desired-replicas annotation in the active replica sets of the deployment.
 //
 // rsList should come from getReplicaSetsForDeployment(d).
-// podMap should come from getPodMapForDeployment(d, rsList).
 func (dc *DeploymentController) isScalingEvent(d *apps.Deployment, rsList []*apps.ReplicaSet) (bool, error) {
 	newRS, oldRSs, err := dc.getAllReplicaSetsAndSyncRevision(d, rsList, false)
 	if err != nil {