diff --git a/adafruit_wiznet5k/adafruit_wiznet5k_wsgiserver.py b/adafruit_wiznet5k/adafruit_wiznet5k_wsgiserver.py
index 6309b8f..d4625e3 100644
--- a/adafruit_wiznet5k/adafruit_wiznet5k_wsgiserver.py
+++ b/adafruit_wiznet5k/adafruit_wiznet5k_wsgiserver.py
@@ -229,7 +229,7 @@ def _get_environ(self, client: socket.socket) -> Dict:
             body = client.recv(int(env["CONTENT_LENGTH"]))
             env["wsgi.input"] = io.StringIO(body)
         else:
-            body = client.recv(1024)
+            body = client.recv(0)
             env["wsgi.input"] = io.StringIO(body)
         for name, value in headers.items():
             key = "HTTP_" + name.replace("-", "_").upper()