diff --git a/SAS/TMSS/src/tmss/tmssapp/models/scheduling.py b/SAS/TMSS/src/tmss/tmssapp/models/scheduling.py
index a84cdfe8ef973725814bdc6febd9dcc430cf1d21..0c08cfa08301df48307a223361c062f7c3225637 100644
--- a/SAS/TMSS/src/tmss/tmssapp/models/scheduling.py
+++ b/SAS/TMSS/src/tmss/tmssapp/models/scheduling.py
@@ -310,7 +310,7 @@ class Filesystem(NamedCommon):
 
 class Cluster(NamedCommon):
     location = CharField(max_length=128, help_text='Human-readable location of the cluster.')
-    archive_site = BooleanField(help_text='TRUE if this cluster is an archive site, FALSE if not (f.e. a local cluster, or user-owned cluster).')
+    archive_site = BooleanField(default=False, null=False, help_text='TRUE if this cluster is an archive site, FALSE if not (f.e. a local cluster, or user-owned cluster).')
 
 
 class DataproductArchiveInfo(BasicCommon):