diff --git a/src/boot/efi/stub.c b/src/boot/efi/stub.c
index d0a9acf5d2..26c204fb43 100644
--- a/src/boot/efi/stub.c
+++ b/src/boot/efi/stub.c
@@ -87,9 +87,10 @@ EFI_STATUS efi_main(EFI_HANDLE image, EFI_SYSTEM_TABLE *sys_table) {
 #endif
         }
 
-        /* export the device path this image is started from */
-        if (disk_get_part_uuid(loaded_image->DeviceHandle, uuid) == EFI_SUCCESS)
-                efivar_set(L"LoaderDevicePartUUID", uuid, FALSE);
+        /* Export the device path this image is started from, if it's not set yet */
+        if (efivar_get_raw(&loader_guid, L"LoaderDevicePartUUID", NULL, NULL) != EFI_SUCCESS)
+                if (disk_get_part_uuid(loaded_image->DeviceHandle, uuid) == EFI_SUCCESS)
+                        efivar_set(L"LoaderDevicePartUUID", uuid, FALSE);
 
         /* if LoaderImageIdentifier is not set, assume the image with this stub was loaded directly from UEFI */
         if (efivar_get_raw(&loader_guid, L"LoaderImageIdentifier", NULL, NULL) != EFI_SUCCESS) {