diff --git a/anki/decks.py b/anki/decks.py
index e284fe072..029a7ae6a 100644
--- a/anki/decks.py
+++ b/anki/decks.py
@@ -473,7 +473,7 @@ class DeckManager:
                 actv.append((g['name'], g['id']))
         return actv
 
-    def parents(self, did):
+    def parents(self, did, nameMap=None):
         "All parents of did."
         # get parent and grandparent names
         parents = []
@@ -484,7 +484,11 @@ class DeckManager:
                 parents.append(parents[-1] + "::" + part)
         # convert to objects
         for c, p in enumerate(parents):
-            parents[c] = self.get(self.id(p))
+            if nameMap:
+                deck = nameMap[p]
+            else:
+                deck = self.get(self.id(p))
+            parents[c] = deck
         return parents
 
     def parentsByName(self, name):
@@ -503,6 +507,9 @@ class DeckManager:
 
         return parents
 
+    def nameMap(self):
+        return dict((d['name'], d) for d in self.decks.values())
+
     # Sync handling
     ##########################################################################
 
diff --git a/anki/sched.py b/anki/sched.py
index be6242b85..19fc17275 100644
--- a/anki/sched.py
+++ b/anki/sched.py
@@ -183,6 +183,7 @@ order by due""" % self._deckLimit(),
         tot = 0
         pcounts = {}
         # for each of the active decks
+        nameMap = self.col.decks.nameMap()
         for did in self.col.decks.active():
             # early alphas were setting the active ids as a str
             did = int(did)
@@ -191,7 +192,7 @@ order by due""" % self._deckLimit(),
             if not lim:
                 continue
             # check the parents
-            parents = self.col.decks.parents(did)
+            parents = self.col.decks.parents(did, nameMap)
             for p in parents:
                 # add if missing
                 if p['id'] not in pcounts:
diff --git a/anki/schedv2.py b/anki/schedv2.py
index edb18093c..de0f99588 100644
--- a/anki/schedv2.py
+++ b/anki/schedv2.py
@@ -171,6 +171,7 @@ order by due""" % self._deckLimit(),
         tot = 0
         pcounts = {}
         # for each of the active decks
+        nameMap = self.col.decks.nameMap()
         for did in self.col.decks.active():
             # early alphas were setting the active ids as a str
             did = int(did)
@@ -179,7 +180,7 @@ order by due""" % self._deckLimit(),
             if not lim:
                 continue
             # check the parents
-            parents = self.col.decks.parents(did)
+            parents = self.col.decks.parents(did, nameMap)
             for p in parents:
                 # add if missing
                 if p['id'] not in pcounts: