diff --git a/reactos/hal/halx86/generic/acpi/halpnpdd.c b/reactos/hal/halx86/generic/acpi/halpnpdd.c
index 4dc4177b9b7..e2560e3f6ae 100644
--- a/reactos/hal/halx86/generic/acpi/halpnpdd.c
+++ b/reactos/hal/halx86/generic/acpi/halpnpdd.c
@@ -137,6 +137,9 @@ HalpAddDevice(IN PDRIVER_OBJECT DriverObject,
         FdoExtension->ChildPdoList = PdoExtension;
     }
 
+    /* Invalidate device relations since we added a new device */
+    IoInvalidateDeviceRelations(TargetDevice, BusRelations);
+
     /* Return status */
     DPRINT1("Device added %lx\n", Status);
     return Status;