diff --git a/src/mainboard/lenovo/s230u/devicetree.cb b/src/mainboard/lenovo/s230u/devicetree.cb
index 3c1fc9e..14d849d 100644
--- a/src/mainboard/lenovo/s230u/devicetree.cb
+++ b/src/mainboard/lenovo/s230u/devicetree.cb
@@ -36,7 +36,7 @@
 			register "gpi13_routing" = "2"
 			register "gpi7_routing" = "2"
 			register "pcie_hotplug_map" = "{ 0, 1, 0, 1, 0, 0, 0, 0 }"
-			register "pcie_port_coalesce" = "1"
+			register "pcie_port_coalesce" = "true"
 			register "sata_interface_speed_support" = "0x3"
 			register "sata_port_map" = "0x5"
 			register "superspeed_capable_ports" = "0x0000000f"