diff --git a/mm/memblock.c b/mm/memblock.c
index 942a96536dc6..758ea0f15302 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -2453,7 +2453,7 @@ static void __init memmap_init_reserved_pages(void)
 		if (memblock_is_nomap(region))
 			reserve_bootmem_region(start, end, nid);
 
-		memblock_set_node(start, end, &memblock.reserved, nid);
+		memblock_set_node(start, region->size, &memblock.reserved, nid);
 	}
 
 	/* initialize struct pages for the reserved regions */