diff --git a/samsungtvws/remote.py b/samsungtvws/remote.py
index b5d748b..d373c9e 100644
--- a/samsungtvws/remote.py
+++ b/samsungtvws/remote.py
@@ -94,7 +94,7 @@ def _set_token(self, token):
             _LOGGING.info('New token %s', token)
             self.token = token
 
-    def _ws_send(self, command, key_press_delay):
+    def _ws_send(self, command, key_press_delay=None):
         if self.connection is None:
             self.open()