diff --git a/server/robotserver/coroutine.cc b/server/robotserver/coroutine.cc
index cccdaa9e..fbc05807 100644
--- a/server/robotserver/coroutine.cc
+++ b/server/robotserver/coroutine.cc
@@ -5,19 +5,11 @@
 Coroutine::Coroutine(std::function<void(Coroutine*)> cb)
 {
     cb_ = cb;
-    #if 0
     source_ = std::make_shared<boost::coroutines2::coroutine<void>::pull_type>
         (
-         [&] (boost::coroutines2::coroutine<void>::pull_type& sink)
+         [this] (boost::coroutines2::coroutine<void>::push_type& sink)
          {
-
-         });
-    #endif
-    boost::coroutines2::coroutine<void>::pull_type source
-        (
-         [&] (boost::coroutines2::coroutine<void>::push_type& sink)
-         {
-
+             cb_(this);
          });
 }