diff --git a/rrdtool/mirror-rrd.c b/rrdtool/mirror-rrd.c
index 24c46aa..edf46ed 100644
--- a/rrdtool/mirror-rrd.c
+++ b/rrdtool/mirror-rrd.c
@@ -9,6 +9,9 @@ int main(void) {
 		case -1:
 			return -1;
 		case 0:
+			close(0);
+			close(1);
+			setsid();
 			break;
 		default:
 			_exit(0);