From 6d71b8e9b947cfed2ff5f40741207adb8d9da872 Mon Sep 17 00:00:00 2001
From: Daniel Garcia-Sanchez <daniel.garcia-sanchez@insp.upmc.fr>
Date: Fri, 10 Apr 2020 12:31:28 +0200
Subject: [PATCH] Fix if statement

---
 examples/step-69/step-69.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/step-69/step-69.cc b/examples/step-69/step-69.cc
index 8e9e27ec7a..6c6b1300ed 100644
--- a/examples/step-69/step-69.cc
+++ b/examples/step-69/step-69.cc
@@ -2867,7 +2867,7 @@ namespace Step69
     // At this point we can return from the <code>output()</code> function
     // and resume with the time stepping in the main loop - the thread will
     // run in the background.
-    if (!asynchronous_writeback)
+    if (asynchronous_writeback)
       {
 #ifdef DEAL_II_WITH_THREADS
         background_thread_state = std::async(std::launch::async, output_worker);
-- 
2.39.5