diff --git a/src/wrap_cl.hpp b/src/wrap_cl.hpp
index f5ab376c6814a0649c684eedba093b2164dec219..ae5d3dc275e52af71994f5e72a1e79d205a2b2e0 100644
--- a/src/wrap_cl.hpp
+++ b/src/wrap_cl.hpp
@@ -1515,9 +1515,6 @@ namespace pyopencl
 
       static void evt_callback(cl_event evt, cl_int command_exec_status, void *user_data)
       {
-        // FIXME REMOVE
-        puts("event callback: started");
-
         event_callback_info_t *cb_info = reinterpret_cast<event_callback_info_t *>(user_data);
         {
           std::lock_guard<std::mutex> lg(cb_info->m_mutex);
@@ -1525,14 +1522,8 @@ namespace pyopencl
           cb_info->m_command_exec_status = command_exec_status;
           cb_info->m_notify_thread_wakeup_is_genuine = true;
         }
-        // FIXME REMOVE
-        puts("event callback: before cv notify");
 
         cb_info->m_condvar.notify_one();
-
-        // FIXME REMOVE
-        puts("event callback: done");
-
       }
 
     public:
@@ -1549,26 +1540,18 @@ namespace pyopencl
 
         std::thread notif_thread([cb_info]()
             {
-              // FIXME REMOVE
-              puts("thread: started");
               {
                 std::unique_lock<std::mutex> ulk(cb_info->m_mutex);
                 cb_info->m_condvar.wait(
                     ulk,
                     [&](){ return cb_info->m_notify_thread_wakeup_is_genuine; });
 
-                // FIXME REMOVE
-                puts("thread: wait returned");
-
                 // ulk no longer held here, cb_info ready for deletion
               }
 
               {
                 py::gil_scoped_acquire acquire;
 
-                // FIXME REMOVE
-                puts("thread: gil acquired");
-
                 if (cb_info->m_set_callback_suceeded)
                 {
                   try {
@@ -1585,15 +1568,9 @@ namespace pyopencl
                   }
                 }
 
-                // FIXME REMOVE
-                puts("thread: before delete");
-
                 // Need to hold GIL to delete py::object instances in
                 // event_callback_info_t
                 delete cb_info;
-                //
-                // FIXME REMOVE
-                puts("thread: ending");
               }
             });
         // Thread is away--it is now its responsibility to free cb_info.