diff --git a/xrdpdev/xorg.conf b/xrdpdev/xorg.conf
index 8079ea89..24a7b056 100644
--- a/xrdpdev/xorg.conf
+++ b/xrdpdev/xorg.conf
@@ -7,6 +7,9 @@ Section "ServerLayout"
 EndSection
 
 Section "ServerFlags"
+    # This line prevents "ServerLayout" sections in xorg.conf.d files
+    # overriding the "X11 Server" layout (xrdp #1784)
+    Option "DefaultServerLayout" "X11 Server"
     Option "DontVTSwitch" "on"
     Option "AutoAddDevices" "off"
 EndSection