diff --git a/quantum/plugins/ryu/agent/ryu_quantum_agent.py b/quantum/plugins/ryu/agent/ryu_quantum_agent.py
index 77569fb53e..4f96b88e04 100755
--- a/quantum/plugins/ryu/agent/ryu_quantum_agent.py
+++ b/quantum/plugins/ryu/agent/ryu_quantum_agent.py
@@ -21,6 +21,7 @@
 # @author: Isaku Yamahata
 import ConfigParser
 import logging as LOG
+import shlex
 import signal
 import sys
 import time