diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index ae2959b..034617f 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1020,7 +1020,7 @@
 	 * size such that we can guarentee to record the reservation. */
 	if (&rg->link == head || t < rg->from) {
 		nrg = kmalloc(sizeof(*nrg), GFP_KERNEL);
-		if (nrg == 0)
+		if (!nrg)
 			return -ENOMEM;
 		nrg->from = f;
 		nrg->to   = f;