diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 110ee7656b41a9b1ee27057604c923213700e06d..ec3b9e9f30f4fd2ae5ad9edc9951564889eae58a 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -426,7 +426,7 @@ void __init mem_init(void)
 
 #ifdef CONFIG_HIGHMEM
 	for (tmp = highstart_pfn; tmp < highend_pfn; tmp++) {
-		struct page *page = mem_map + tmp;
+		struct page *page = pfn_to_page(tmp);
 
 		if (!page_is_ram(tmp)) {
 			SetPageReserved(page);