diff --git a/cpu-miner.c b/cpu-miner.c
index bc9ea8c3..3c78e252 100644
--- a/cpu-miner.c
+++ b/cpu-miner.c
@@ -499,6 +499,7 @@ static bool workio_submit_work(struct workio_cmd *wc)
 		applog(LOG_ERR, "Failed to create submit_thread");
 		return false;
 	}
+	pthread_detach(thr);
 
 	return true;
 }