diff --git a/config/aso/settings.yaml b/config/aso/settings.yaml
index a62f63fd658..1a31bb5b098 100644
--- a/config/aso/settings.yaml
+++ b/config/aso/settings.yaml
@@ -7,7 +7,7 @@ stringData:
   AZURE_AUTHORITY_HOST: ${AZURE_AUTHORITY_HOST:=""}
   AZURE_RESOURCE_MANAGER_ENDPOINT: ${AZURE_RESOURCE_MANAGER_ENDPOINT:=""}
   AZURE_RESOURCE_MANAGER_AUDIENCE: ${AZURE_RESOURCE_MANAGER_AUDIENCE:=""}
-  AZURE_SYNC_PERIOD: ${AZURE_SYNC_PERIOD:=""}
+  AZURE_SYNC_PERIOD: ${AZURE_SYNC_PERIOD:="1h"}
   # Per-resource Secrets will be created based on a Cluster's AzureClusterIdentity.
   AZURE_SUBSCRIPTION_ID: ""
   AZURE_TENANT_ID: ""