diff --git a/linux-rasp-pi4-X11-EGLFS.md b/linux-rasp-pi4-X11-EGLFS.md
index d030b9e..9a4bc4e 100644
--- a/linux-rasp-pi4-X11-EGLFS.md
+++ b/linux-rasp-pi4-X11-EGLFS.md
@@ -35,4 +35,14 @@ Running on a software rasterizer (LLVMpipe), expect limited performance.
 ```
 sudo gpasswd -a pi render
 ```
-https://bugreports.qt.io/browse/QTBUG-76889
\ No newline at end of file
+https://bugreports.qt.io/browse/QTBUG-76889
+
+
+### Fix
+Propblem with application running too early and can't access HDMI output.
+
+Add this to [Service] tab in systemd file
+```
+After=multi-user.target
+```
+