diff --git a/plstackapi/core/models.py b/plstackapi/core/models.py
index 0a69df5..3eb0f20 100644
--- a/plstackapi/core/models.py
+++ b/plstackapi/core/models.py
@@ -15,7 +15,7 @@
 class Site(PlCoreBase):
     tenant_id = models.CharField(max_length=200, help_text="Keystone tenant id")
     name = models.CharField(max_length=200, help_text="Name for this Site")
-    site_url = models.URLField(help_text="Site's Home URL Page", blank=True)
+    site_url = models.URLField(null=True, blank=True, help_text="Site's Home URL Page")
     enabled = models.BooleanField(default=True, help_text="Status for this Site")
     longitude = models.FloatField(null=True, blank=True)
     latitude = models.FloatField(null=True, blank=True)