diff --git a/ccsniffpiper.py b/ccsniffpiper.py
index 969b58a..18b3483 100644
--- a/ccsniffpiper.py
+++ b/ccsniffpiper.py
@@ -334,7 +334,7 @@ def isRunning(self):
     def recv(self):
 
         while self.running:
-            bytesteam = self.dev.read(CC2531.DATA_EP, 4096, 0, CC2531.DATA_TIMEOUT)
+            bytesteam = self.dev.read(CC2531.DATA_EP, 4096, timeout=CC2531.DATA_TIMEOUT)
 #             print "RECV>> %s" % binascii.hexlify(bytesteam)
 
             if len(bytesteam) >= 3: