diff --git a/components/schemas/containers/config/deploy/ContainerDeployHighAvailabilityConfig.yml b/components/schemas/containers/config/deploy/ContainerDeployHighAvailabilityConfig.yml
index efd1f96c..040fdce1 100644
--- a/components/schemas/containers/config/deploy/ContainerDeployHighAvailabilityConfig.yml
+++ b/components/schemas/containers/config/deploy/ContainerDeployHighAvailabilityConfig.yml
@@ -5,6 +5,4 @@ required:
 properties:
   stale_primary_deadline:
     description: The amount of time that must pass between high availability checkins before an instance is considered stale. If it is the primary, a new primary will be elected after this deadline. Minimum is 15s.
-    oneOf:
-      - $ref: ../../../Duration.yml
-      - type: "null"
+    $ref: ../../../Duration.yml
diff --git a/stackspec/schema/deploy/StackSpecContainerConfigHighAvailability.yml b/stackspec/schema/deploy/StackSpecContainerConfigHighAvailability.yml
index baf43c14..7b3f7a9a 100644
--- a/stackspec/schema/deploy/StackSpecContainerConfigHighAvailability.yml
+++ b/stackspec/schema/deploy/StackSpecContainerConfigHighAvailability.yml
@@ -5,6 +5,4 @@ required:
 properties:
   stale_primary_deadline:
     description: The amount of time that must pass between high availability checkins before an instance is considered stale. If it is the primary, a new primary will be elected after this deadline. Minimum is 15s.
-    oneOf:
-      - $ref: ../../../components/schemas/Duration.yml
-      - $ref: ../StackVariable.yml
+    $ref: ../../../components/schemas/Duration.yml