diff --git a/lmwsip/run.py b/lmwsip/run.py
index 70d8585..3f79295 100755
--- a/lmwsip/run.py
+++ b/lmwsip/run.py
@@ -26,6 +26,10 @@ def run(args):
                 print("< [%s]" % (lmwsip.recv().strip('\r')))
             except:
                 pass
+    try:
+        lmwsip.closesocket()
+    except:
+        pass
 
 def main():
     lastTime=LmwSip.lasttime(None, "H10")