diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 889532b..009ac28 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4511,7 +4511,7 @@
 	pg_data_t *pgdat = NODE_DATA(nid);
 
 	/* pg_data_t should be reset to zero when it's allocated */
-	WARN_ON(pgdat->nr_zones || pgdat->node_start_pfn || pgdat->classzone_idx);
+	WARN_ON(pgdat->nr_zones || pgdat->classzone_idx);
 
 	pgdat->node_id = nid;
 	pgdat->node_start_pfn = node_start_pfn;