diff --git a/planetstack/core/admin.py b/planetstack/core/admin.py
index 8bf7976..0e38d43 100644
--- a/planetstack/core/admin.py
+++ b/planetstack/core/admin.py
@@ -478,6 +478,7 @@
     sites = forms.ModelMultipleChoiceField(
         queryset=Site.objects.all(),
         required=False,
+        help_text="Select which sites are allowed to host nodes in this deployment",
         widget=FilteredSelectMultiple(
             verbose_name=('Sites'), is_stacked=False
         )
diff --git a/planetstack/core/models/site.py b/planetstack/core/models/site.py
index a97de3e..eea62fe 100644
--- a/planetstack/core/models/site.py
+++ b/planetstack/core/models/site.py
@@ -21,7 +21,7 @@
     abbreviated_name = models.CharField(max_length=80)
 
     #deployments = models.ManyToManyField('Deployment', blank=True, related_name='sites')
-    deployments = models.ManyToManyField('Deployment', through='SiteDeployments', blank=True)
+    deployments = models.ManyToManyField('Deployment', through='SiteDeployments', blank=True, help_text="Select which sites are allowed to host nodes in this deployment")
     tags = generic.GenericRelation(Tag)
 
     def __unicode__(self):  return u'%s' % (self.name)