diff --git a/src/arena.c b/src/arena.c
index ba50e410..e956c394 100644
--- a/src/arena.c
+++ b/src/arena.c
@@ -199,13 +199,12 @@ arena_stats_merge(tsdn_t *tsdn, arena_t *arena, unsigned *nthreads,
 	malloc_mutex_lock(tsdn, &arena->tcache_ql_mtx);
 	cache_bin_array_descriptor_t *descriptor;
 	ql_foreach(descriptor, &arena->cache_bin_array_descriptor_ql, link) {
-		szind_t i = 0;
-		for (; i < SC_NBINS; i++) {
+		for (szind_t i = 0; i < SC_NBINS; i++) {
 			cache_bin_t *tbin = &descriptor->bins_small[i];
 			arena_stats_accum_zu(&astats->tcache_bytes,
 			    tbin->ncached * sz_index2size(i));
 		}
-		for (; i < nhbins; i++) {
+		for (szind_t i = 0; i < nhbins - SC_NBINS; i++) {
 			cache_bin_t *tbin = &descriptor->bins_large[i];
 			arena_stats_accum_zu(&astats->tcache_bytes,
 			    tbin->ncached * sz_index2size(i));