diff --git a/magnum/drivers/common/templates/kubernetes/helm/cern-chart.sh b/magnum/drivers/common/templates/kubernetes/helm/cern-chart.sh
index a7a418767fe35cf4a69be95c194732d5a5a967e4..fbc15862522aadd2f78b9615d5ff86be3a5a0ddf 100644
--- a/magnum/drivers/common/templates/kubernetes/helm/cern-chart.sh
+++ b/magnum/drivers/common/templates/kubernetes/helm/cern-chart.sh
@@ -101,7 +101,7 @@ ${NVIDIA_GPU_VALUES}
     snapshot-controller:
       enabled: ${SNAPSHOT_CONTROLLER_ENABLED}
     snapshot-validation-webhook:
-      enabled: ${SNAPSHOT_VALIDATION_WEBHOOK}
+      enabled: ${SNAPSHOT_VALIDATION_WEBHOOK_ENABLED}
     node-problem-detector:
       enabled: ${NPD_ENABLED}
     base: