diff --git a/tools/libxl/libxl_dm.c b/tools/libxl/libxl_dm.c
index 736f1cecac..e0c3aa4998 100644
--- a/tools/libxl/libxl_dm.c
+++ b/tools/libxl/libxl_dm.c
@@ -488,6 +488,11 @@ int libxl__domain_device_construct_rdm(libxl__gc *gc,
 
         assert(xrdm);
 
+        rc = libxl__device_pci_setdefault(gc, DOMID_INVALID,
+                                          &d_config->pcidevs[i], false);
+        if (rc)
+            goto out;
+
         for (n = 0; n < nr_entries; ++n) {
             bool new = true;
 
diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h
index 43e5885d1e..4891722a6b 100644
--- a/tools/libxl/libxl_internal.h
+++ b/tools/libxl/libxl_internal.h
@@ -1709,6 +1709,8 @@ _hidden void libxl__device_pci_add(libxl__egc *egc, uint32_t domid,
                                    libxl__ao_device *aodev);
 _hidden void libxl__device_pci_destroy_all(libxl__egc *egc, uint32_t domid,
                                            libxl__multidev *);
+_hidden int libxl__device_pci_setdefault(libxl__gc *gc, uint32_t domid,
+                                         libxl_device_pci *pci, bool hotplug);
 _hidden bool libxl__is_igd_vga_passthru(libxl__gc *gc,
                                         const libxl_domain_config *d_config);
 
diff --git a/tools/libxl/libxl_pci.c b/tools/libxl/libxl_pci.c
index f91bce07ec..3cf346c23e 100644
--- a/tools/libxl/libxl_pci.c
+++ b/tools/libxl/libxl_pci.c
@@ -1483,8 +1483,8 @@ static int libxl__device_pci_reset(libxl__gc *gc, unsigned int domain, unsigned
     return -1;
 }
 
-static int libxl__device_pci_setdefault(libxl__gc *gc, uint32_t domid,
-                                        libxl_device_pci *pci, bool hotplug)
+int libxl__device_pci_setdefault(libxl__gc *gc, uint32_t domid,
+                                 libxl_device_pci *pci, bool hotplug)
 {
     /* We'd like to force reserve rdm specific to a device by default.*/
     if (pci->rdm_policy == LIBXL_RDM_RESERVE_POLICY_INVALID)