diff --git a/test/test_large_read.py b/test/test_large_read.py
index 353fc72..82bb925 100644
--- a/test/test_large_read.py
+++ b/test/test_large_read.py
@@ -53,8 +53,5 @@ def test_large_read_multiple_bytes(test_capnp):
     for m in test_capnp.Msg.read_multiple_bytes(data):
         pass
 
-    for m in test_capnp.Msg.read_multiple_bytes(buffer(data)):
-        pass
-
     for m in test_capnp.Msg.read_multiple_bytes(memoryview(data)):
         pass