diff --git a/src/sipevent/notify.c b/src/sipevent/notify.c
index 790b1dc..d86dc23 100644
--- a/src/sipevent/notify.c
+++ b/src/sipevent/notify.c
@@ -99,6 +99,9 @@ static void tmr_handler(void *arg)
 {
 	struct sipnot *not = arg;
 
+	if (not->terminated)
+		return;
+
 	re_printf("subscription expired\n");
 
 	sipnot_terminate(not, ETIMEDOUT, NULL, SIPEVENT_TIMEOUT);
diff --git a/src/sipevent/subscribe.c b/src/sipevent/subscribe.c
index 3fa9e2b..f326dd2 100644
--- a/src/sipevent/subscribe.c
+++ b/src/sipevent/subscribe.c
@@ -99,7 +99,7 @@ static void tmr_handler(void *arg)
 	struct sipsub *sub = arg;
 	int err;
 
-	if (sub->req)
+	if (sub->req || sub->terminated)
 		return;
 
 	err = request(sub, true);