diff --git a/src/main/log.c b/src/main/log.c
index 4a904a0..a35f77a 100644
--- a/src/main/log.c
+++ b/src/main/log.c
@@ -128,6 +128,7 @@ void li_log_cleanup(liServer *srv) {
 		g_thread_join(srv->logs.thread);
 	}
 
+	g_static_mutex_free(&srv->logs.write_queue_mutex);
 	li_radixtree_free(srv->logs.targets, NULL, NULL);
 
 	g_string_free(srv->logs.timestamp.format, TRUE);