diff --git a/tailbone/views/roles.py b/tailbone/views/roles.py
index d43e37ad..19c91276 100644
--- a/tailbone/views/roles.py
+++ b/tailbone/views/roles.py
@@ -2,7 +2,7 @@
 ################################################################################
 #
 #  Rattail -- Retail Software Framework
-#  Copyright © 2010-2017 Lance Edgar
+#  Copyright © 2010-2018 Lance Edgar
 #
 #  This file is part of Rattail.
 #
@@ -65,10 +65,22 @@ class RolesView(PrincipalMasterView):
         g.set_sort_defaults('name')
         g.set_link('name')
 
+    def unique_name(self, node, value):
+        query = self.Session.query(model.Role)\
+                            .filter(model.Role.name == value)
+        if self.editing:
+            role = self.get_instance()
+            query = query.filter(model.Role.uuid != role.uuid)
+        if query.count():
+            raise colander.Invalid(node, "Name must be unique")
+
     def configure_form(self, f):
         super(RolesView, self).configure_form(f)
         role = f.model_instance
 
+        # name
+        f.set_validator('name', self.unique_name)
+
         # permissions
         self.tailbone_permissions = self.request.registry.settings.get('tailbone_permissions', {})
         f.set_renderer('permissions', PermissionsRenderer(permissions=self.tailbone_permissions))