diff --git a/daemon/worker.c b/daemon/worker.c
index a5dd9bc02..76a912093 100644
--- a/daemon/worker.c
+++ b/daemon/worker.c
@@ -2638,6 +2638,11 @@ void libworker_event_done_cb(void* ATTR_UNUSED(arg), int ATTR_UNUSED(rcode),
 	log_assert(0);
 }
 
+void libworker_alloc_cleanup(void* ATTR_UNUSED(arg))
+{
+	log_assert(0);
+}
+
 int context_query_cmp(const void* ATTR_UNUSED(a), const void* ATTR_UNUSED(b))
 {
 	log_assert(0);
diff --git a/smallapp/worker_cb.c b/smallapp/worker_cb.c
index 92ebe386d..876c7db4e 100644
--- a/smallapp/worker_cb.c
+++ b/smallapp/worker_cb.c
@@ -128,6 +128,12 @@ worker_alloc_cleanup(void* ATTR_UNUSED(arg))
 	log_assert(0);
 }
 
+void
+libworker_alloc_cleanup(void* ATTR_UNUSED(arg))
+{
+	log_assert(0);
+}
+
 struct outbound_entry* libworker_send_query(
 	struct query_info* ATTR_UNUSED(qinfo), uint16_t ATTR_UNUSED(flags),
 	int ATTR_UNUSED(dnssec), int ATTR_UNUSED(want_dnssec),
diff --git a/util/fptr_wlist.c b/util/fptr_wlist.c
index a45134065..5edd8adf2 100644
--- a/util/fptr_wlist.c
+++ b/util/fptr_wlist.c
@@ -610,6 +610,7 @@ int
 fptr_whitelist_alloc_cleanup(void (*fptr)(void*))
 {
 	if(fptr == &worker_alloc_cleanup) return 1;
+	else if(fptr == &libworker_alloc_cleanup) return 1;
 	return 0;
 }