diff --git a/smmapdfw/verify_worker/verify_worker.c b/smmapdfw/verify_worker/verify_worker.c
index 492139f..3a692a8 100644
--- a/smmapdfw/verify_worker/verify_worker.c
+++ b/smmapdfw/verify_worker/verify_worker.c
@@ -358,7 +358,7 @@ int cache_lookup(verify_container_handle_t *vch, const char* address, int *resul
 	  res = 0;
 	} else {
 	  syslog(LOG_DEBUG, "cache_lookup: expired, will be deleted from cache");
-	  free(data.dptr);
+	  /* free(data.dptr); --- Berkeley DB frees on its own */
 	  dbm_close(cache);
 
 	  pthread_mutex_lock(vch->cache_mutex);