diff --git a/tests/xorg_16bit.conf b/tests/xorg_16bit.conf
new file mode 100644
index 000000000..0f54fd740
--- /dev/null
+++ b/tests/xorg_16bit.conf
@@ -0,0 +1,4 @@
+Section "Screen"
+    Identifier    "Bit depth override"
+    DefaultDepth    16
+EndSection