diff --git a/uasyncio/benchmark/test_http_server_light.py b/uasyncio/benchmark/test_http_server_light.py
index 2fbb92a1..33db55ec 100644
--- a/uasyncio/benchmark/test_http_server_light.py
+++ b/uasyncio/benchmark/test_http_server_light.py
@@ -5,7 +5,7 @@ import uasyncio as asyncio
 def serve(reader, writer):
     #print(reader, writer)
     #print("================")
-    yield from reader.read(256)
+    yield from reader.read(512)
     yield from writer.awrite("HTTP/1.0 200 OK\r\n\r\nHello.\r\n")
     yield from writer.aclose()
     #print("Finished processing request")
diff --git a/uasyncio/benchmark/test_http_server_medium.py b/uasyncio/benchmark/test_http_server_medium.py
index 77a0ea99..cc42c03a 100644
--- a/uasyncio/benchmark/test_http_server_medium.py
+++ b/uasyncio/benchmark/test_http_server_medium.py
@@ -6,7 +6,7 @@ resp = "HTTP/1.0 200 OK\r\n\r\n" + "Hello.\r\n" * 1500
 def serve(reader, writer):
     #print(reader, writer)
     #print("================")
-    yield from reader.read(256)
+    yield from reader.read(512)
     yield from writer.awrite(resp)
     yield from writer.aclose()
     #print("Finished processing request")