diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 84fdcf5633c3..b81a367b9f39 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -218,7 +218,7 @@ void register_page_bootmem_info_node(struct pglist_data *pgdat)
 	}
 
 	pfn = pgdat->node_start_pfn;
-	end_pfn = pfn + pgdat->node_spanned_pages;
+	end_pfn = pgdat_end_pfn(pgdat);
 
 	/* register_section info */
 	for (; pfn < end_pfn; pfn += PAGES_PER_SECTION) {