diff --git a/modules/viz2d/samples/cpp/tetra/tetra-demo.cpp b/modules/viz2d/samples/cpp/tetra/tetra-demo.cpp
index 175e7905e..484379506 100644
--- a/modules/viz2d/samples/cpp/tetra/tetra-demo.cpp
+++ b/modules/viz2d/samples/cpp/tetra/tetra-demo.cpp
@@ -113,6 +113,7 @@ int main(int argc, char **argv) {
     using namespace cv::viz;
 
     printSystemInfo();
+
     if(!v2d->isOffscreen())
         v2d->setVisible(true);