diff --git a/paddleslim/common/controller_client.py b/paddleslim/common/controller_client.py
index fd6575e04b16d6491ad02dc7a6e1725c68505460..ad989dd16014fa8e6fa1495516e81048324fb826 100644
--- a/paddleslim/common/controller_client.py
+++ b/paddleslim/common/controller_client.py
@@ -51,7 +51,7 @@ class ControllerClient(object):
         socket_client.send("{}\t{}\t{}".format(self._key, tokens, reward)
                            .encode())
         response = socket_client.recv(1024).decode()
-        if response.trip('\n').split("\t") == "ok":
+        if response.strip('\n').split("\t") == "ok":
             return True
         else:
             return False