diff --git a/owlps-aggregator/owlps-aggregatord.c b/owlps-aggregator/owlps-aggregatord.c
index a5c7dcb..3db4ee3 100644
--- a/owlps-aggregator/owlps-aggregatord.c
+++ b/owlps-aggregator/owlps-aggregatord.c
@@ -825,14 +825,14 @@ void got_request(owl_captured_request request)
 
 /*
  * Empties the request list.
+ * Note that this function does not use lock_requests, so it should not
+ * be called in a concurrent context.
  */
 void free_request_list()
 {
   request_list *next_request ;
   request_info_list *next_request_info ;
 
-  sem_wait(&lock_requests) ;
-
   while (requests != NULL)
     {
       while (requests->info != NULL)
@@ -845,8 +845,6 @@ void free_request_list()
       free(requests) ;
       requests = next_request ;
     }
-
-  sem_post(&lock_requests) ;
 }
 
 
@@ -1157,6 +1155,8 @@ void order_send(ap_list *ap)
 
 /*
  * Empties the AP list.
+ * Note that this function does not use lock_aps, so it should not
+ * be called in a concurrent context.
  */
 void free_ap_list()
 {