diff --git a/src/mainboard/lenovo/t520/devicetree.cb b/src/mainboard/lenovo/t520/devicetree.cb
index d347e82..065261a 100644
--- a/src/mainboard/lenovo/t520/devicetree.cb
+++ b/src/mainboard/lenovo/t520/devicetree.cb
@@ -76,6 +76,8 @@
 			register "c2_latency" = "101"  # c2 not supported
 			register "p_cnt_throttling_supported" = "1"
 
+			register "pcie_hotplug_map" = "{ 0, 0, 0, 1, 0, 0, 0, 0 }"
+
 			device pci 16.0 on end # Management Engine Interface 1
 			device pci 16.1 off end
 			device pci 16.2 off end