diff --git a/anki/decks.py b/anki/decks.py
index bb6da9130..95caac797 100644
--- a/anki/decks.py
+++ b/anki/decks.py
@@ -115,7 +115,7 @@ class DeckManager(object):
         g = copy.deepcopy(type)
         if "::" in name:
             # not top level; ensure all parents exist
-            self._ensureParents(name)
+            name = self._ensureParents(name)
         g['name'] = name
         while 1:
             id = intTime(1000)
@@ -230,13 +230,20 @@ class DeckManager(object):
         return self._path(name)[-1]
 
     def _ensureParents(self, name):
+        "Ensure parents exist, and return name with case matching parents."
         s = ""
-        for p in self._path(name)[:-1]:
+        path = self._path(name)
+        for p in path[:-1]:
             if not s:
                 s += p
             else:
                 s += "::" + p
-            self.id(s)
+            # fetch or create
+            did = self.id(s)
+            # get original case
+            s = self.name(did)
+        name = s + "::" + path[-1]
+        return name
 
     # Deck configurations
     #############################################################
diff --git a/tests/test_decks.py b/tests/test_decks.py
index 9cfd2b7e3..08e8231bd 100644
--- a/tests/test_decks.py
+++ b/tests/test_decks.py
@@ -30,6 +30,16 @@ def test_basic():
     deck.decks.select(childId)
     assert deck.decks.selected() == childId
     assert deck.decks.active() == [childId]
+    # parents with a different case should be handled correctly
+    deck.decks.id("ONE")
+    m = deck.models.current()
+    m['did'] = deck.decks.id("one::two")
+    deck.models.save(m)
+    n = deck.newNote()
+    n['Front'] = "abc"
+    deck.addNote(n)
+    # this will error if child and parent case don't match
+    deck.sched.deckDueList()
 
 def test_remove():
     deck = getEmptyDeck()