diff --git a/deploy/kubernetes/snapshot-controller/setup-snapshot-controller.yaml b/deploy/kubernetes/snapshot-controller/setup-snapshot-controller.yaml
index 0bc195cd..b4136e01 100644
--- a/deploy/kubernetes/snapshot-controller/setup-snapshot-controller.yaml
+++ b/deploy/kubernetes/snapshot-controller/setup-snapshot-controller.yaml
@@ -37,5 +37,7 @@ spec:
           args:
             - "--v=5"
             - "--leader-election=true"
+            # Add a marker to the snapshot-controller manifests. This is needed to enable feature gates in CSI prow jobs.
+            # For example, in https://github.com/kubernetes-csi/csi-release-tools/pull/209, the snapshot-controller YAML is updated to add --prevent-volume-mode-conversion=true so that the feature can be enabled for certain e2e tests.
             # end snapshot controller args
           imagePullPolicy: IfNotPresent