diff --git a/rosserial_python/src/rosserial_python/SerialClient.py b/rosserial_python/src/rosserial_python/SerialClient.py
index 180dceff1..cd5256a09 100644
--- a/rosserial_python/src/rosserial_python/SerialClient.py
+++ b/rosserial_python/src/rosserial_python/SerialClient.py
@@ -281,6 +281,9 @@ def startSocketServer(self, port, address):
     def flushInput(self):
         pass
 
+    def flushOutput(self):
+	pass
+
     def write(self, data):
         if not self.isConnected:
             return