diff --git a/environments/lifecycle/upgrade-converge.yaml b/environments/lifecycle/upgrade-converge.yaml
index 0616473341..a1d88c0ecd 100644
--- a/environments/lifecycle/upgrade-converge.yaml
+++ b/environments/lifecycle/upgrade-converge.yaml
@@ -3,7 +3,6 @@
 # by the operator. Please use additional -e env.yaml.
 parameter_defaults:
   EnablePackageInstall: false
-  UpgradeLevelNovaCompute: ''
   UpgradeInitCommonCommand: ''
   UpgradeInitCommand: ''
   # FFU params
diff --git a/environments/lifecycle/upgrade-prepare.yaml b/environments/lifecycle/upgrade-prepare.yaml
index 82baad5aa4..213601ecac 100644
--- a/environments/lifecycle/upgrade-prepare.yaml
+++ b/environments/lifecycle/upgrade-prepare.yaml
@@ -9,7 +9,7 @@ resource_registry:
 
 parameter_defaults:
   EnablePackageInstall: true
-  UpgradeLevelNovaCompute: auto
+  UpgradeLevelNovaCompute: ''
   UpgradeInitCommonCommand: |
     #!/bin/bash
     set -eu