diff --git a/prep.sh b/prep.sh
index 55bb409..fb538cf 100755
--- a/prep.sh
+++ b/prep.sh
@@ -1,4 +1,4 @@
-#!/bin/bash -x
+#!/bin/bash
 #
 # This file is part of Moonfire NVR, a security camera network video recorder.
 # Copyright (C) 2016 Scott Lamb <slamb@slamb.org>