--- a/opencv_contrib-3.4.1/modules/ovis/src/ovis.cpp	2020-01-13 08:18:05.062153116 +0100
+++ b/opencv_contrib-3.4.1/modules/ovis/src/ovis.cpp	2020-01-13 08:18:19.624152770 +0100
@@ -147,7 +147,7 @@
     int flags;
 
     Application(const Ogre::String& _title, const Size& sz, int _flags)
-        : OgreBites::ApplicationContext("ovis", false), sceneMgr(NULL), title(_title), w(sz.width),
+        : OgreBites::ApplicationContext("ovis"), sceneMgr(NULL), title(_title), w(sz.width),
           h(sz.height), key_pressed(-1), flags(_flags)
     {
         logMgr.reset(new LogManager());