diff --git a/softsynth.c b/softsynth.c
index 35d01fd..d3fe1b1 100644
--- a/softsynth.c
+++ b/softsynth.c
@@ -170,7 +170,8 @@ static void request_espeak_stop(void)
 	pthread_mutex_lock(&queue_guard);
 	runner_must_stop = 1;
 	pthread_cond_signal(&runner_awake);	/* Wake runner, if necessary. */
-	pthread_cond_wait(&stop_acknowledged, &queue_guard);
+	while(runner_must_stop == 1)
+	pthread_cond_wait(&stop_acknowledged, &queue_guard);	/* wait for acknowledgement. */
 	pthread_mutex_unlock(&queue_guard);
 }