diff --git a/mm/percpu.c b/mm/percpu.c
index db86282fd024..c5c750781628 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -2384,7 +2384,7 @@ static struct pcpu_alloc_info * __init pcpu_build_alloc_info(
 	ai->atom_size = atom_size;
 	ai->alloc_size = alloc_size;
 
-	for (group = 0, unit = 0; group_cnt[group]; group++) {
+	for (group = 0, unit = 0; group < nr_groups; group++) {
 		struct pcpu_group_info *gi = &ai->groups[group];
 
 		/*