diff --git a/linux-rasp-pi3-vc4-g%2B%2B-X11-EGLFS.md b/linux-rasp-pi3-vc4-g%2B%2B-X11-EGLFS.md
index d93f96d..4d6f9ef 100644
--- a/linux-rasp-pi3-vc4-g%2B%2B-X11-EGLFS.md
+++ b/linux-rasp-pi3-vc4-g%2B%2B-X11-EGLFS.md
@@ -18,8 +18,11 @@ Configuration:
 ```
 
 sources:
+
 https://www.raspberrypi.org/forums/viewtopic.php?t=272855
 
 https://wiki.qt.io/RaspberryPi2EGLFS
 
-https://stackoverflow.com/questions/59607191/qt-eglfs-backend-with-mesa-driver-without-x11-xorg
\ No newline at end of file
+https://stackoverflow.com/questions/59607191/qt-eglfs-backend-with-mesa-driver-without-x11-xorg
+
+https://www.tal.org/tutorials/building-qt-512-raspberry-pi
\ No newline at end of file