diff --git a/src/common/metrics/ngx_wa_metrics.c b/src/common/metrics/ngx_wa_metrics.c
index 4187a136d..0bf26c358 100644
--- a/src/common/metrics/ngx_wa_metrics.c
+++ b/src/common/metrics/ngx_wa_metrics.c
@@ -241,6 +241,10 @@ ngx_wa_metrics_init(ngx_wa_metrics_t *metrics, ngx_cycle_t *cycle)
     }
 
     if (metrics->old_metrics && metrics->shm_zone->noreuse) {
+        /* mark the old kv store for cleanup during SIGHUP old_cycle free */
+        metrics->old_metrics->shm_zone->noreuse = 1;
+
+        /* realloc old kv store */
         old_shm_kv = ngx_wasm_shm_get_kv(metrics->old_metrics->shm);
 
         return realloc_metrics(metrics, old_shm_kv->rbtree.root,