diff --git a/source/get-started/virtual-machine-install/kvm.rst b/source/get-started/virtual-machine-install/kvm.rst
index bb3bea89d..e3d8cddf7 100644
--- a/source/get-started/virtual-machine-install/kvm.rst
+++ b/source/get-started/virtual-machine-install/kvm.rst
@@ -141,7 +141,7 @@ To add :abbr:`GDM (GNOME Display Manager)` to the |CL| VM, follow these steps:
           -m 4096 \
           -vga qxl \
           -nographic \
-          -spice port=5924,disable-ticketing \
+          -spice port=5924,disable-ticketing=on \
           -usb \
           -device usb-tablet,bus=usb-bus.0 \
           -drive file="$IMAGE",if=virtio,aio=threads,format=raw \