X-Git-Url: http://git.ithinksw.org/philo.git/blobdiff_plain/4277b566b93122c8efac805684e423f92e723d1f..7838f389cf5ebed7c23b764581cd563d1865828c:/contrib/shipherd/models.py

diff --git a/contrib/shipherd/models.py b/contrib/shipherd/models.py
index e43e8d9..72bd775 100644
--- a/contrib/shipherd/models.py
+++ b/contrib/shipherd/models.py
@@ -111,7 +111,7 @@ class NavigationManager(TreeManager):
 		"""
 		if navigation is None:
 			self.__class__._cache.clear()
-		else:
+		elif self.db in self.__class__._cache:
 			cache = self.__class__._cache[self.db]
 			for pk, qs in cache.items():
 				if navigation in qs: