diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 43dc6afe63..f132cdda44 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -28915,7 +28915,7 @@ static int restart_monitor(void)
 		ast_log(LOG_WARNING, "Cannot kill myself\n");
 		return -1;
 	}
-	if (monitor_thread != AST_PTHREADT_NULL) {
+	if (monitor_thread != AST_PTHREADT_NULL && monitor_thread != AST_PTHREADT_STOP) {
 		/* Wake up the thread */
 		pthread_kill(monitor_thread, SIGURG);
 	} else {