diff --git a/apps/app_meetme.c b/apps/app_meetme.c
index e24b6045b3..bdfb801c4c 100644
--- a/apps/app_meetme.c
+++ b/apps/app_meetme.c
@@ -1447,6 +1447,10 @@ static void sla_queue_event_full(enum sla_event_type type,
 {
 	struct sla_event *event;
 
+	if (sla.thread == AST_PTHREADT_NULL) {
+		return;
+	}
+
 	if (!(event = ast_calloc(1, sizeof(*event))))
 		return;