diff --git a/iso/overlay/etc/systemd/system/nvidia-fabricmanager.service.d/bee-nvswitch-check.conf b/iso/overlay/etc/systemd/system/nvidia-fabricmanager.service.d/bee-nvswitch-check.conf
index 219e2d1..fbd5e04 100644
--- a/iso/overlay/etc/systemd/system/nvidia-fabricmanager.service.d/bee-nvswitch-check.conf
+++ b/iso/overlay/etc/systemd/system/nvidia-fabricmanager.service.d/bee-nvswitch-check.conf
@@ -1,3 +1,8 @@
+[Unit]
+# bee-nvidia.service loads the NVIDIA kernel modules; fabricmanager must wait
+# for them to be fully initialized before attempting to open /dev/nvidiactl.
+After=bee-nvidia.service
+
 [Service]
 # Skip fabricmanager on systems without NVSwitch hardware.
 # ExecCondition exits 1-254 → unit is silently skipped (inactive, not failed).