diff --git a/lib/libfrr.c b/lib/libfrr.c
index 3e2e008223..d5078f98aa 100644
--- a/lib/libfrr.c
+++ b/lib/libfrr.c
@@ -886,6 +886,7 @@ void frr_fini(void)
 	zprivs_terminate(di->privs);
 	/* signal_init -> nothing needed */
 	thread_master_free(master);
+	master = NULL;
 	closezlog();
 	/* frrmod_init -> nothing needed / hooks */