diff --git a/borg/fuse.py b/borg/fuse.py
index 19dc09cc9..3b2eefa0f 100644
--- a/borg/fuse.py
+++ b/borg/fuse.py
@@ -28,7 +28,7 @@ class ItemCache:
 
     def get(self, inode):
         self.fd.seek(inode - self.offset, io.SEEK_SET)
-        return next(msgpack.Unpacker(self.fd))
+        return next(msgpack.Unpacker(self.fd, read_size=512))
 
 
 class FuseOperations(llfuse.Operations):