diff --git a/bin/clientdemo b/bin/clientdemo
--- a/bin/clientdemo
+++ b/bin/clientdemo
@@ -25,7 +25,7 @@ if __name__ == "__main__":
 
     def updateDemoValue():
         v = list(g.objects(L9['demo'], L9['is']))
-        print "demo value is %r" % v
+        print("demo value is %r" % v)
 
     g.addHandler(updateDemoValue)