--- GREYCstoration-2.9/src/plugins/greycstoration.h.old	2016-09-22 22:46:42.907946423 -0400
+++ GREYCstoration-2.9/src/plugins/greycstoration.h	2016-09-22 22:49:56.439530308 -0400
@@ -454,7 +454,7 @@
       p.temporary = 0;
       p.counter = 0;
       p.tile = p.tile_border = p.thread = p.nb_threads = 0;
-      p.stop_request = false;
+      p.stop_request = NULL;
       greycstoration_mutex_destroy(p);
     }
     p.is_running = false;