diff --git a/examples/client.rb b/examples/client.rb
index e314c03..e69cb6d 100755
--- a/examples/client.rb
+++ b/examples/client.rb
@@ -8,7 +8,7 @@
 client = Gearman::Client.new(servers)
 taskset = Gearman::TaskSet.new(client)
 
-task = Gearman::Task.new('sleep', 20)
+task = Gearman::Task.new('sleep', '20')
 task.on_complete {|d| puts d }
 
 taskset.add_task(task)