diff --git a/mm/slab.c b/mm/slab.c
index 7b5d4de..7dfa481 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -1384,7 +1384,7 @@
 	 * Fragmentation resistance on low memory - only use bigger
 	 * page orders on machines with more than 32MB of memory.
 	 */
-	if (num_physpages > (32 << 20) >> PAGE_SHIFT)
+	if (totalram_pages > (32 << 20) >> PAGE_SHIFT)
 		slab_break_gfp_order = BREAK_GFP_ORDER_HI;
 
 	/* Bootstrap is tricky, because several objects are allocated