diff --git a/utils/CIndex/completion_logger_server.py b/utils/CIndex/completion_logger_server.py
index e8be6ce..3182c1c 100755
--- a/utils/CIndex/completion_logger_server.py
+++ b/utils/CIndex/completion_logger_server.py
@@ -29,8 +29,10 @@
       break
     else:
       f.write(strftime("'%a, %d %b %Y %H:%M:%S' ", localtime()))
+      f.write("'{0}' ".format(addr[0]))
       f.write(data)
       f.write('\n')
+      f.flush()
 
   # Close socket
   UDPSock.close()