diff --git a/pylib/anki/collection.py b/pylib/anki/collection.py
index 994ef93b1..55c3f5cf9 100644
--- a/pylib/anki/collection.py
+++ b/pylib/anki/collection.py
@@ -33,7 +33,6 @@ from anki.rsbackend import (  # pylint: disable=unused-import
     DBError,
     FormatTimeSpanContext,
     InvalidInput,
-    NoteIDs,
     Progress,
     RustBackend,
     pb,
diff --git a/pylib/anki/rsbackend.py b/pylib/anki/rsbackend.py
index 15fbde7f5..5ccaa2b1a 100644
--- a/pylib/anki/rsbackend.py
+++ b/pylib/anki/rsbackend.py
@@ -47,7 +47,6 @@ TagTreeNode = pb.TagTreeNode
 NoteType = pb.NoteType
 DeckTreeNode = pb.DeckTreeNode
 StockNoteType = pb.StockNoteType
-NoteIDs = pb.NoteIDs
 BackendNoteTypeID = pb.NoteTypeID
 ConcatSeparator = pb.ConcatenateSearchesIn.Separator
 SyncAuth = pb.SyncAuth
diff --git a/rslib/backend.proto b/rslib/backend.proto
index cdb4aa988..d3d023f7a 100644
--- a/rslib/backend.proto
+++ b/rslib/backend.proto
@@ -50,10 +50,6 @@ message NoteID {
   int64 nid = 1;
 }
 
-message NoteIDs {
-  repeated int64 nids = 1;
-}
-
 message CardID {
   int64 cid = 1;
 }